Organic Worm Casting Tea for Aquaponics

FF (Fish Friendly) Organic Worm Castings for Making Worm Casting Tea!

Brought to you by PFAS LLC, Portable Farms® Aquaponics Systems’ Modular Aquaponics Systems

worm castings 2

FF (Fish Friendly) Organic Worm Castings are Now Available for Sale from Portable Farms.To Order FF Mineral Rock Dust: CLICK HERE. (Ships from San Diego, California)

FF Portable Farms® Worm Casting Tea – The Quick and Easy Method

We suggest you purchase a simple sprayer to apply the worm castings tea to your plants.


We recommend you spray the plants in your Portable Farm once a week with Worm Casting Tea to create healthier plants. There are tremendous benefits from the foliar application of Worm Casting Tea in your Portable Farm:

  • Safe for your fish (a very big advantage)
  • These worm casting are pure organic worm castings and not vermin-compost.
  • The worm casting tea is non-toxic to plants, fish, pets or people.
  • By spraying the worm tea on your plants (under the leaves as well as on top) and over your seed trays (seed nursery), you’re adding nutrients directly to your growing plants and making them healthier and minimizing any potential problems.
  • Since you’re spraying the leaves and fruit/vegetables, pathogens are less likely to attack your plants because you’re adding beneficial microbes (very important to healthy plant growth) to the surface of the plants.
  • Worm casting tea used as a foliar spray is beneficial and controls many fugal problems like black spot, black mildew and tomato blight, to mention a few.
  • Testing proves that there are microorganism properties in the worm casting tea that act as an insect repellent for many insects such as aphids, white fly, spider mites, and other small bugs that eat plant juices. This is due to enzyme released in the worm tea called chitinase which will dissolve chitin which is the exoskeleton of an insect.

To Order FF Mineral Rock Dust: CLICK HERE. (Ships from San Diego, California)

The Portable Farms® Worm Casting Tea method works much faster than standard methods and produces tea of equal or better quality. You can make your Organic Worm-Castings Tea in as little as 4 hours and 98% of that time is allowing the tea to brew or sit and brew prior to application in your aquaponics system. Easy to make. Easy to spray. Great for your aquaponics system.

For an Aquaponics system with 200 sq. ft. of grow space, use one cup of FF Worm Casting Tea. You only need 10 cups of fish-friendly water from fish tank or aquarium to make the tea and apply it on the same day. 


Adjust amounts for your grow tray size. The Portable Farms® Worm Casting Tea Method makes two assumptions:

  1. You have an aquarium or fish tank water or water that has been in an open container for overnight.
  2. Here is a quick and complete way to remove chlorine from water – Vitamin C (just plain water-soluble ascorbic acid with no fancy additives such as Citrus Bioflavonoids or Rose Hips, etc.) at the rate of 1 mg per gallon of water. We picked up this trick for curing water from our work in Portable Farms®.

Ingredients and equipment:

  1. 1 cup FF Portable Farms® Worm Castings which is 100% organic and supplies a natural source of nitrogen, phosphorus, potassium, calcium and iron for your plants.
  2. 10 cups of water from your aquarium or your fish tank. Use tap water only when it has been treated with Vitamin C to remove the chlorine.
  3. A bucket that holds 14 cups of water (make sure the bucket has had no chemicals in it in prior usages).
  4. Let a kitchen blender to do the work to mix and aerate the worm casting tea.
  5. Use a wire mesh strainer (mesh strainer works better than a spaghetti colander) or a cloth (cheese cloth or old hosiery) to line the strainer (the tea has to pass through your sprayers nozzle so make sure the filter is smaller then the particles in the brewed tea, so strain well). If the worm casting tea is not well strained, it will clog up your sprayer. 


  1. Pour four to five cups of water which has been taken from your total of 10 cups into a kitchen blender  (this process is tough on blenders, so it’s best to buy a cheap one to use only for this type of work) and put the lid on before you blend.
  2. Turn on the blender and let it run for about a minute at a relatively high speed to entrain air into the water oxygenating it.
  3. Remove the lid and then carefully add the one cup of FF Portable Farms® Worm Castings.
  4. Put back the lid back on the blender and run it at full speed for one to two minutes, turn off and then let the mixture sit for 2-4 hours in the blender.
  5. Set up the strainer with the cloth liner to drain into the large bucket with the rest of the water.
  6. Very slowly and carefully pour the mixture through the strainer/cloth into the bucket with the remaining water. The drainage gets slower and slower so you may want to stop and change filters to speed up the process.
  7. Stop pouring when the heavier remains start to flow out of the blender.
  8. Stir the worm casting tea thoroughly.
  9. Pour the resulting liquid into sprayer. Note, the color of the Worm Casting Tea can be VERY black.
  10. Now you can spray your plants on the top and underside of leaves.
  11. Use all of the mixture within a day. It may start to ferment if you leave it in the sprayer longer than one day.
  12. BIG BENEFIT: FF Worm Casting Tea can be made in HOURS not days!

Note: Use the remaining casting residue left in the strainer cloth and blender on your indoor or outdoor plants, or your yard, at the base of a plant or tree. DO NOT PUT LEFT-OVER WORM CASTING RESIDUE INTO IN YOUR AQUAPONICS GROW TRAY.

Very Beneficial Additional Ingredients:

You can add The FF Portable Farms® Mineral Rock Dust at the rate of one teaspoon per batch at the time you add the Worm Castings, now you have a great Mineralized Worm Casting Tea.

This FF Portable Farms® mineralized Worm Castings Tea is quick, elegant, the perfect nutrient foliar spray, a strong insect spray for the plants. It’s fast and easy to make and is applied the same day.

This Portable Farms® Worm Castings Tea or Super Tea is quick, elegant, the perfect foliar spray, a strong insect repellent for the plants and can be made and applied in the same day. One more product and service from PFAS LLC.

Adjust amounts for your grow tray size. The Portable Farms® Worm Casting Tea Method makes two assumptions:

  1. You have an aquarium or fish tank water or water that has been in an open container for overnight.
  2. Here is a quick and complete way to remove chlorine from water – Vitamin C (just plain water-soluble ascorbic acid with no fancy additives such as Citrus Bioflavonoids or Rose Hips, etc.) at the rate of 1 mg per gallon of water. We picked up this trick for curing water from our work in Portable Farms®.

The Real Cost of INDOOR Aquaponics is LESS

The Real Cost of INDOOR Aquaponics 

– by Colle and Phyllis Davis

This article carefully explains indoor growing with aquaponics so you can successfully convert your basement, garage, workshop, spare room, etc. that is currently sitting idle to grow some food and have some fun! This article is not about commercial aquaponics, it is only about utilizing some existing space into a small INDOOR aquaponics system to grow food for you and your family.

Here are the figures everyone wants to know regarding the cost of indoor aquaponics. No matter what size space they have available, they want to know, “What will it cost me to get started?”

The real answer:

  1. The Portable Farms Aquaponics Systems Course© includes the Portable Farms Kit containing the Portable Farms® Aquaponics Systems technology.
  1. The cost of the materials to build one Module that can feed eight people (up to 200 sq ft of grow space) is approximately $700 anywhere in the world.
  1. Full spectrum grow lights to make your plants really happy so you can grow healthy plants (both greens and blooming plants) – about $300.

This is a total of $3,500 plus some labor and adding in cost variances, you will be in the $4,000 range. This cost DOES NOT INCLUDE ANY TYPE OF GREENHOUSE. This quote/information is ONLY for indoor growing spaces.

portable-farms-grow-trays-constructionCaveats to be aware of in this conversion process: 

  1. The numbers above apply to spaces up to about 450 sq ft. Above 450 sq. ft., you will need two Grow Tables and the cost will go up, but not much on a per sq. ft. basis.
  1. Any space that you utilize will require excellent ventilation and some way to reduce the humidity in the space. In most cold climates, this means you will be venting some the oxygen and humidity into your very dry house or outside your house. Think of it as an added benefit.
  1. You will probably have to clean and paint the space before you use it. The area needs to be clean.
  2. The Grow Tables are HEAVY so the floor must be able to support safely 30 lbs per sq foot of dead load.
  1. Water may be spilled (occasionally) and the floor space must be easy to clean up.
  1. Square spaces are actually much harder to plan and build than rectangular spaces.

The total cost to you for converting an indoor of 25’ x 12’ or something similar, will be exactly as described above. The cost per square foot will be in the range of $12+ per sq. ft or close. 

Here are the basic parameters to determine how to utilize the space:

  1. Grow Tables are normally 5’ or 6’ wide and up to 40’ long. The most effective way to utilize space is to subtract 4’ from the length of the space to see how long your Grow Table can be and then see how many Grow Tables and aisles you can fit into the space.
  1. A Module (Grow Table and Fish Tank) is 7.5’ or 8.5’ wide, 5’ plus 2.5’ aisle or 6’ wide and 2.5’ aisle plus an outside aisle.
  1. The formula to use to find number of Modules that will fit into your space = Space width minus 2.5’ divided by 7.5’ or 8.5’ = number of Modules that will fit.

aquaponics is fun and eays


Keep pH BELOW 7.2 in Aquaponics

Nutrient Absorption Occurs BELOW 7.2 pH
– by Colle and Phyllis Davis

Testeur Ph d'une piscine individuelleIf the pH gets too near or above 7.2 in your Portable Farms® Aquaponics System’s Fish Tank, your plants cannot absorb the nutrients in the system and creates a NUTRIENT SHUTDOWN and your plants will begin to wither, show systems of leaf curl, begin to yellow, have stunted growth and not produce growth or blossoms. In effect, the plants are starving to death.

The Portable Farms® Aquaponics Systems are designed to accomplish this adjustment in an extremely easy manner. Checking the pH in your system at least a couple of times per week is vital, especially as the vegetables approach harvest time; this is an inexpensive process to increase production in the grow trays. This simple checking and adjustment will result in more bountiful harvests of healthy and nutritious produce.

Each plant has a preferred range of pH, or parts Hydrogen, that creates an ideal growing environment for the plant.

In aquaponics, this adjustment is very easily when the water flows through the system. To ‘increase’ the pH means to make the solution more alkaline and to ‘decrease’ the pH means to make the solution more acidic. There are quick and very inexpensive ways to change the pH of water in an aquaponics system.

When adding any agent to adjust the pH levels in your system, allow several hours, and better yet, monitor your system over a day or two before trusting the testing medium results.

Testing can be done with simple swimming pool test strips or with sophisticated scientific instruments that have been designed for the task. Both work very well and if you use both, be prepared to have two very different readings. What you are looking for is consistency using one method. Using both is confusing and makes adjusting the water much harder. (We know from experience . . .)

We check the pH in our fish tanks two or more times per month to make sure the pH is below 7.2.

Each plant has a preferred range of pH, or parts Hydrogen, that creates an ideal growing environment for the plant.

  • Plants in Portable Farms Aquaponics Systems prefer a pH in the 5.8 to 6.8 range, or even a slightly lower range.
  • Fish prefer a little higher pH and to keep both organisms happy, the water in an aquaponics system needs to be adjusted.

The measurement of pH is how acidic (6.9 and below) or alkaline (7.1 or above) a liquid is at any specific moment. This pH measurement is not about the water’s hardness, that is a measurement of the dissolved mineral content in the water, and it is measured in a different way.

In aquaponics, this adjustment is very easily when the water flows through the system. To ‘increase’ the pH means to make the solution more alkaline and to ‘decrease’ the pH means to make the solution more acidic. There are quick and very inexpensive ways to change the pH of water in an aquaponic’s system.

If you are trying to grow vegetables with very different pH requirements in the same grow tray, plant the heavy feeders at the beginning (top) end of the tray and furthest from your fish tank, where the water flows into your grow tray, favoring their pH requirement and the light feeders at the end where the water flows out.

meterWhen adding any agent to adjust the pH levels in your system, allow several hours, and better yet, monitor your system over a day or two before trusting the testing medium results.

Testing can be done with simple swimming pool test strips or with sophisticated scientific instruments that have been designed for the task. Both work very well and if you use both, be prepared to have two very different readings. What you are looking for is consistency using one method. Using both is confusing and makes adjusting the water much harder. (We know from experience . . .)

We use a Microprocessor Conductivity & TDS Meters with Automatic Temperature Compensation with Automatic Calibration to check the water in our systems (image left).

Here is The Difference Between Hydroponics and Aquaponics

Here is The Difference Between Hydroponics and Aquaponics
– by Colle and Phyllis Davis

  • A commercial aquaponics system creates immediate jobs and food for semi-skilled people trained in less than a week.
  • Permanent full-time jobs are created and year round food production is available in three months when grown in greenhouses or warehouses.
  • Aquaponics grows pesticide free food, table vegetables and fish, raised in a simple yet revolutionary new technology that replicates nature.
  • Installation can be solar powered.
  • Total sustainability can be achieved by selling most of the food production to local markets.

Hydroponics (image above of lettuces) is a very recent technology first noted in the 17th Century; the name itself was only coined in 1937 from the Greek words for ‘water’ and for ‘work’ by William Frederick Gericke of the University of California at Berkeley. He grew a 25′ tomato plants in his backyard using only mineral salts in water.

As amazing and productive as hydroponic is, there is a built in problem with the technology. The nutrient solution used in the growing of the plants eventually has to be ‘changed out’ or it will become toxic to the plants, even if the system is being run organically because some of the nutrients become concentrated in the water and even adding water to dilute it, there comes a time when it must be changed out. Therein lies the rub . . .

Hydroponics lettuce root.

The ‘liquor’ as it is called, is now designated by the EPA as toxic waste and must be disposed of properly by qualified personal using approved techniques. Another way to say this is that the waste disposal for hydroponics is expensive and needs to be disposed of by experts. This makes the hydroponic waste removal a much larger expense than most people realize and it’s a topic that’s almost never discussed by those selling hydroponic systems.

Hydroponics has a much older and more benign sister, aquaponics that has been around for over 4,500 years and is the exact same system that nature uses to break down waste to reuse the resulting byproducts to grow new plants and this process has been going on naturally for billions of years.

In aquaponics, there are no toxic chemicals used in the system. After all, chemicals would kill the fish.

Oreochromis Mossambicus Tilapia

The waste products in aquaponics are non toxic, usable on other plants and can even be dumped down a sewer system because they will not harm sewage systems. The waste from an aquaponics system is a valuable fertilizer for plants, shrubbery, trees, or grass. One owner of a small commercial Portable Farms® Aquaponics System even sells his Settling Tank waste as an organic fertilizer and gets US$25 per 5 gallon container and the client picks it up at his greenhouse. Considering that each Module of Portable Farms® produces approximately 50 gallons of waste water every six weeks which can become a nice extra source of income for the installation owner.

Insecticides that help control pests on the plants will nearly always kill the fish. Pesticide free-food creates a safer and healthier food supply. Portable Farms® Aquaponics Systems use NO dirt and no chemicals (insecticides or fertilizers) to grow the plants.

One Grow Table of blooming plants in a Portable
Farms Aquaponics System: tomatoes, cucumbers and beans.

Today, your family can enjoy one of the oldest food-growing technologies wrapped up in a modern, easy to build and operate system in your own backyard, patio or greenhouse.

  • There have been over 300 different varieties of plants  that have been tested and can be grown successfully in a Portable Farms® Aquaponics Systems. For example, lettuce is considered a variety but there are hundreds of variations of lettuces that grow well in aqupaonics. The same is true for peppers, beans, etc.
  • The major food groups that are not recommended for Portable Farms® are root vegetables (carrots, potatoes, onions, etc.) and field crops such as corn, wheat, soy or rice. Perennial plants (strawberries, blackberries, asparagus, etc.) are not recommended because the plants are dormant many months each year and do not produce harvestable food year round. Plus, we recommend growing all plants from seeds and not bringing in plants raised in soil into the structure which can introduce pathogens that can harm the other plants in the structure.

Want to Make a Chef Weak and Breathless?

Want to Make a Chef Weak and Breathless?
– Colle and Phyllis Davis

Do you want to know how to make an Executive Chef weak at the knees and breathless? Offer them a farm that grows an unlimited supply of fresh pesticide-free food and home-grown fish that’s near their kitchen. Then, after they wipe tears of joy from their eyes, tell them that the farm pays for itself and after that, the money they had been spending on food from their suppliers can now be spent on increased salaries and kitchen improvements. Since they’ll be speechless, expect a hug.

Today, Portable Farms® Aquaponics Systems offer fresh food and home-grown fish in an easy to operate system that pays for itself. What could be easier? This really is 21st Century Agriculture.

If a chef has been ordering 2 cartons of lettuce per week (24 heads per carton) from the food supplier who delivers his produce, now he only needs to plant 48 seeds in ‘grow medium’ into his Portable Farms®  Aquaponics System. By planting every week, he never needs to order lettuce again. It only takes 35 to 40 days to grow a head of lettuce. Plus, the produce won’t need to travel from local or long distance farms or endure packing and refrigeration so the food retains all of its flavor and high nutritional value. The chef can always harvest their vegetables at their ‘peak’ of perfection instead of receiving vegetables that were harvested and shipped too early. These systems are a perfect example of a Carbon Negative footprint, especially when compared to in-ground growing and current agricultural practices.

The Portable Farms®  Aquaponics Systems can be sized to meet the food requirements of a restaurant. A 20 x 30′ system can be placed in the parking lot behind a restaurant and will grow 3,600 vegetables and 1,400 pounds of fish per year. This size farm won’t grow enough food for the needs of even a small restaurant with a regular customer base. However, it is large enough to supplement their food supply from existing suppliers and adds ‘bragging rights’ to customers and the local media to increase their customer base because they’ll be able to tell the public they ‘raise a portion of their own organic vegetables behind the restaurant and it also provides some of their own fresh, home-grown fish.’ They can also offer their customers a tour of their farm creating an even deeper customer loyalty. A positive dining experience and a greenhouse tour will spread the excitement around town, within days.

chef proud 2A larger restaurant who wants to reduce food costs, should consider a 90 x 120′ (1/4 acre) Portable Farms®  Aquaponics Systems near the restaurant.  This size Portable Farms® grows 60,000 to 70,000 vegetables and around 21,000 pounds of fish per year, depending on the crop choice and the market values for those crops, the ROI for this sized unit is between three and five years. The ROI is much faster for commercial sized systems because they have far more growing space for vegetables and tank space for fish.

What is a Portable Farms®  Aquaponics System?

The Portable Farms®  Aquaponics System is a closed loop, water-based fish and organic vegetable production system. It utilizes insulated and heated fish tanks to grow Tilapia, and then runs the warm water from the fish tank (rich with warm, nutrient-rich fish waste) through a clarifying system with special pumps, and then the water flows through  gravel-filled Grow Trays to feed and water the growing plants. The entire system is built in modules; each module (shown below) contains one fish tank, one settling tank, and of course, the food growing space. These modules are enclosed in a climatically adapted growing structure, usually a greenhouse. The structure keeps out pests and helps maintain a perfect growing temperature. A commercial sized system contains between 28 and 32 modules.

The Portable Farms®  Aquaponics Systems are specifically designed to utilize currently unused urban or near-urban space to grow food as close to the end consumer as possible. It is not designed to replace regular land-based agriculture. The main function of the Portable Farms® Aquaponics System is to produce nutritious food, on site, using a minimum of space, electricity, water and labor.

Restaurants generally purchase food from local and national suppliers who arrange with providers for vegetables, dairy, bakeries, meat and fish to be delivered to their restaurants. These suppliers sell chefs what’s available on the market at that time, and then make regular deliveries to their kitchens. It sounds simple, but it is not. Thousands of people are involved in the process of growing food, shipping it, selling it in the marketplace, and then distributing the food to restaurants for preparation by chefs to serve to their dining customers. And, in the process of bringing food from farm to table, the costs rise to pay everyone along the line.

Owning a Portable Farms®  Aquaponics System takes all the ‘middle men/women’ out of the equation. In fact, one full-time, semi-skilled worker can operate and maintain over 1/4 of an acre of Portable Farms®  Aquaponics System. It’s not quite ‘a drive through farm,’ but it’s close.

Make YOUR chef happy today. A happy chef creates a happy and prosperous restaurant with loyal customers who tell all their friends about their dining experience. It’s the best investment you can make in today’s competitive environment. LEARN FROM US: CLICK HERE.

Tilapia – The Fish That Fertilize our Plants in Our Aquaponics Systems

Tilapia – The Fish That Fertilize our Plants in  Our Aquaponics Systems
– by Colle and Phyllis Davis

One of the most commonly asked questions we receive is concerning the fish that we use in Portable Farms®, “Why Tilapia?'”

In the US, please check with your local Fish and Wildlife Department in your State and see if Tilapia are legal in your area.

It generally takes between 7 and 9 months for a tilapia to grow to maturity and we harvest them then at 1.25 lbs (approximately) which yields two four-ounce fillets.

Tilapia is still our champion and will probably remain so for a long time:

Tilapia are considered a fresh water, warm water fish.’ The plants grown in aquaponics systems grow faster in a warm environment, which requires warm water flowing through the systems. Plants do best at 73° F no matter where they are in the world. They may grow faster or slower in warmer or cooler temperatures, but they grow best with a leaf surface temperature of almost exactly 73° F. That means that the fish in the system need to love and enjoy warm water.

Please note, different countries have different choices for their aquaponics systems with fish that are ‘fresh water, warm water fish’ other than tilapia. For example, in Australia we’re told they favor using barramundi, silver and golden  perch, and catfish. Portable Farms Aquaponics Systems favor using tilapia.

  • Most trout/salmon do not like water over 60° F at which point they begin to experience stress and become susceptible to diseases above this temperature level. This means either the water must be cooled and heated each cycle, or the fish or the plants will be unhappy and not grow well.
  • Trout/salmon are also carnivores and are grown best on animal protein. Commercial trout chow contains fish meal as the protein source and that fish meal is from ocean harvest fish, depleting the ocean fisheries.
  • Catfish, which was our personal first choice, have a different problem. The fry or fingerlings are only available three months of the year (May, June, July) so there is no way for farm owners to constantly restock their fish tanks. Catfish grow quickly, they like warm water, they will eat almost anything, they taste good and are a hardy fish. But, stocking off season is impossible.
  • Perch are carnivores and eat bugs, crayfish and other animals to grow. These are tough to get in the winter time unless you grow them inside for some other purpose. Perch food is tough to get almost any time of the year. Perch taste sweet and are easy to work with but are difficult to find food for them.
  • Crayfish and freshwater prawns are cannibalistic and need to have separate ‘apartments’ built in the tanks so they don’t eat each other. They are sometimes used in the tanks with other fish to clean up the bottom of the tanks. They are very hardy, but the housing for them is a problem.

That leaves the incredibly, tasty, hearty and adaptable Tilapia. They are very easy to prepare, taste great, grow quickly, and are available year round. They will eat and prefer plant protein and are very hardy. They prefer a water temperature in the low 80° F’s, the water can be fresh water, brackish water or even salty water, and they do just fine. They will thrive in water that can be dirty looking and still grow and be ready for eating almost anywhere in the world. Of course, our newly configured Portable Farms CAD pumps remove all sediment from the tanks and they swim in clear, clean water that turns over at least twice per day.

Aquaponics Uses 90 to 95% LESS WATER than Traditional Agriculture.

Aquaponics Uses 90 to 95% LESS WATER than Traditional Agriculture.
– by Colle and Phyllis Davis

As global warming, the price of gas, drought conditions and desertification continue to impact agriculture, the world is aggressively looking for new ways to grow food locally, using less water than is required by traditional agricultural methods.

75% of available water is used in agriculture and that potable water is becoming scarce – on  a global scale.

Being protective and adopting an attitude of sustainability is key to the future for a prosperous and healthy world.

The earth has 7,689,853,500 inhabitants.  

The population of the United States is 328,561,723.

Components of Population Change
One birth every 8 seconds
One death every 11 seconds
One international migrant (net) every 34 seconds
Net gain of one person every 18 seconds


1. China 1,389,618,778   6. Brazil 210,301,591
2. India 1,311,559,204   7. Nigeria 208,679,114
3. United States 331,883,986   8. Bangladesh 161,062,905
4. Indonesia 264,935,824   9. Russia 141,944,641
5. Pakistan 210,797,836   10. Mexico 127,318,112

Portable Farms® Aquaponics Systems require 95% LESS water than in-ground growing. PLUS, they produce the ready availability of a protein source though the growing of fish. Dr. Latham, Director of the Program in International Nutrition at Cornell University claims that malnutrition is a frequent cause of death and disease in third world countries. Protein-energy malnutrition (PEM) affects 500 million people and kills 10 million annually.

Image result for world drought map

This map shows the results of computer models that have
projected the risk of drought for the years 2030 to 2039. 

This saltwater-cooled greenhouse grows crops in the Sahara are an example of using the most abundant natural resources available to make a new kind of farming possible. Read that sentence again, the key word is at the end, possible.

The cost of the installation was so high that the investment will never be recouped and the system will probably never be duplicated. It is another example of a solution in search of a problem where the solution is so expensive that it will not impact the problem in any meaningful way.


But affordable food can be grown YEAR ROUND in aquaponics systems in the deserts, mountains, urban areas, warehouses or backyards! Building a modern climatically adapted structure containing modern aquaponics systems placed near high-end restaurants, casinos, resort hotels and other markets which demand the finest foods, results in a very attractive ROI. Add to that the initial PR buzz and the attraction of more investors being drawn into the space where they can take advantage of the new technology. Every installation has to be tailored to the area it will be build in order to be designed and built to leverage the advantage of the location.




greenhouse4The desert is also one of the best places to collect and use solar energy to power plant and fish growing systems. The time of day when the highest utilization takes place in an aquaponics system is during the day when the sun in nearly always bring and shiny. The demand for energy drops off before sunset and drops to a minimum requirement during the night hours.

If you live in a desert climate or almost anywhere there is adequate sunlight most of the time then a Portable Farms® Aquaponics Systems installed in a climatically adapted structure will make your life much safer, more secure and you will have the best food in the world at your fingertips.

Portable Farms® Aquaponics Systems  Are the Most 
Productive and Reliable Aquaponics Systems in the World

  • Without the use of any pesticides, harsh chemicals, antibiotics or hormones. 

  • Portable Farms® use 95% less water than traditional agricultural methods.

  • Portable Farms® use less electrical power than any other aquaponics system in the world and can be solar or wind powered.

  • Portable Farms® provide table vegetables (greens and blooming plants such as tomatoes, peppers, etc.) and fish (tilapia) as a protein source to maintain optimal health.

  • Three people can operate one-quarter of an acre of Portable Farms® which feeds 240 people forever. Twelve people can operate one acre of Portable Farms® which feeds 1,000 people forever.

  • Portable Farms® can be operated by semi-skilled labor and people of almost any age (young and old).

  • Greens grown in Portable Farms® can be harvested in as few as 28 days after installation and continue producing forever .

  • Portable Farms® feed families, communities, cities, countries and the world.

Hot Trending Investment for 2019: COMMERCIAL AQUAPONICS

Hot Trending Investment for 2019: 

– by Colle and Phyllis Davis

greenhouse large

Where can money be invested today that will give the investor a reasonable rate of return and more importantly assure a safe investment that will be long lasting and be selling product into a growing and insatiable market? Go through the list of all of the possibilities you can think of, and then, add in these additional benefits to the equation:

    • Produces food on a year round basis
    • Can be solar powered
    • Can use recycled water
    • Employs local semi-skilled labor (women, men, young and old)
    • Enhances the value of the property and surrounding property
    • Is non-polluting
    • Produces organic food and requires 90% to 95% less water than in-ground growing
    • Can be installed nearly anywhere in the world
    • Produces an organic fertilizer that can be used on any crop or plants.

Let’s add in:

    • An ROI of less than five years on the initial installation
    • Subsequent installations with less than three year ROI
    • Unlimited expansion in a designated territory
    • Small annual renewal fee
    • Constant updates to the technology
    • Engineers available to be on site to help with the initial installation
    • Consulting available.

Watch Colle Davis, Lead Inventor, Portable Farms Aquaponics Systems, talk about commercial aquaponics and his book, Commercial Aquaponics GOLD. 

Commercial Aquaponics Gold, EBOOK. For more information and to purchase, CLICK HERE.

  • This comprehensive information about commercial aquaponics provides you will all the facts you’ll need to make an informed business decision about commercial aquaponics growing in controlled environment agricultural (CEA).
  • We’re also offering TWO FREE BONUSES with the purchase of Commercial Aquaponics GOLD: 1) A formal ten-step strategy business plan template designed specifically for commercial aquaponics growing to present to funders and, 2) PFAS LLC’s Executive Summary showing production and operating costs, profits and best-produce choices to achieve the shortest Return on Investment.


Once you have your funding in place contact Colle Davis with the specifications of the installation you are planning and see how quickly it can come to fruition.

Precision Growing in Aquaponics Systems

Precision Growing with Portable Farms® Aquaponics Systems
– by Colle and Phyllis Davis

Precision growing is defined as ‘delivering the exact nutrients and other requirements necessary for growing  healthy plants with the required amounts of food, nutrients and light.’

Aquaponics uses grow tables in a much more efficient and effective manner. The water’s pH and carefully timed delivery system as well as the addition of macro-nutrients and micro-nutrients are all very important to successful growing results. So are the available light level and intensity and the temperature and the air flow in the building. Delivering each requirement at all times results in maximum yields in record growing times. The added expenses of these high tech growing systems are very quickly offset by the dramatic increases in yields.

  • Controlled environment agricultural growing is very quickly becoming the state-of-the-art production because of the multitude of advantages. These include:
      • Extended growing season – often year round
      • Greatly reduced consumption of water even with in-ground growing methods
      • Less expensive and more accurate pest control – often pests are eliminated as a problem
      • Growing is placed much nearer to markets in many cases
      • Less chance for crop losses due to weather, pests, water loss and theft
      • More efficient use of fertilizers and nutrients used for maximum production
      • Custom and high-value crops easier to grow for local markets.

Portable Farms® Aquaponics Systems actually deliver a slight excess of everything the plants need, even the light, so every plant always have the perfect conditions for maximum growth. PFAS also has other advantages:

      • Less water use than any other type of commercial growing system available today
      • No pesticides are ever used
      • The waste water is a valuable fertilizer that can be used on other crops or sold at a profit
      • Waist high work area
      • No single point of failure
      • No weeding – ever
      • Watering is automatic
      • No soil or dirt inside the building.

For maximum production/yield, PFAS LLC recommends the following ENHANCEMENTS to a regular PFAS installation:

      • The addition of micro-nutrients that include  iron, magnesium, calcium and potassium and 53 other vital minerals are supplied with organic FF-Mineral Rock Dust
      • High performance greenhouse coverings that protect from weather extremes.
      • Insulation of all walls and roof that do not contribute direct sunlight to the grow trays
      • Grow lights capable of providing maximum full spectrum lighting for both greens and blooming plants.
      • Inert growing medium for planting seeds
      • Trellis installation for maximum vertical growing for blooming plants (tomatoes, cucumbers, beans, peppers, etc.)
      • Full monitoring system of all functions within the building that notify operator of any necessary adjustments required
      • Low cost fish tank heaters
      • Automatic water leveling system for fish tanks.

These controlled-environments-precision-growing-systems are capital intensive on the front end, but they produce income very quickly and continue to produce income over long periods of time with only operational expenses needing to be covered. The ROI on the Portable Farms® Aquaponics Systems is only three to five years. Investors really appreciate these advantages and the new ‘farmers’ appreciate the opportunity to reap huge rewards for their efforts.

Duckweed – The Food of the Future

Duckweed  – The Food of the Future 
– by Colle and Phyllis Davis

Portable FarmsDuckweed MAY be the food of the future. Grown under ideal conditions, duckweed ranges between 25% and 45% protein and doubles its growth every 36 hours, and OUR TILAPIA love to eat it.

We do not profess to be experts at growing farm-raised duckweed to feed our fish. In fact, quite the opposite is true. We have grown duckweed in kiddy-pools, large and small containers and even open-air tanks off-and-on for many years and we have not always been successful in our efforts to maintain our duckweed farms, but we keep trying and we continue to experiment to find the answers to pass along to you.

Duckweed seems to overgrow in places that people do not want it to grow – like ponds, rivers and lakes, but it’s been difficult for us to raise it in tubs for more than a few weeks before it dies. If duckweed covers the surface of a body of water, there is an oxygen depletion which kills fish in the ponds, rivers or lakes. (Feed tilapia only enough for them to eat. The remnants are picked off over time.)

Our latest experiments for growing duckweed suggests putting PVC pipes or PVC fittings in the water in the tanks for the duckweed to grow around it (which makes sense) so we’re going to try that and we’ll keep you posted.

If you plan to raise enough farm-raised duckweed to feed your fish for a commercial sized-farm, we recommend you speak with a local botanist in your area that might be able to guide you better than we can. There is a vast amount of scientific research and available information on the Internet about duckweed.

Image of duckweed growing near a bridge. If you look for areas near your own home with standing water, you may see your own ‘starter batch’ of duckweed. 

Fun fact: People asked us for a long time what duckweed tasted like. One day our construction engineer said, “Well, I guess you ought to taste it so you can tell them.” So I did. It tastes like watercress. Tangy, peppery and very clean tasting.  “Thought you’d like to know.” – Colle

Also, starch that comes from duckweed can quickly be changed into ethanol, which it can used instead of corn for ethanol. Farmers from large-scale hog farms, rid their waste through large duckweed lagoons.” It helps manage their animal wastes through biological treatment and can even ‘clean’ hog-waste water and makes the water potable by running the water through enough duckweed. Interesting, eh?

Here are a few links for you to study duckweed and its benefits and complexities:

Portable FarmsDuckweed in kids 8′ kiddy pools

In fact, here is a link to a technical working paper by researchers for the World Bank, Duckweed Aquaculture, A New Aquatic Farming System for Developing Countries, by Paul Skillicorn, William Spira and William Journey – Emena Technical Department, Agricultural Division.

Advice for ridding unwanted duckweed from ponds from the Royal Horticultural Society in London:

Non-chemical controls: Complete control is impossible and growth should be controlled before it reaches nuisance levels. Try the following for control and prevention of duckweed:

  • On small ponds repeated raking or netting will keep the weed under control. Continuous removal is usually necessary
  • On larger pools use a floating boom to sweep from end to end. Sweep at intervals from early in the season and continue until winter dormancy
  • You can compost the removed weed
  • Fit stop-boards at any upstream inlets to prevent duckweeds entering ponds or lakes
  • Weed-eating water birds, such as domestic and ornamental ducks, moorhens and coots will provide some degree of control
  • Grass carp will eat Lemna species
  • Shading can reduce duckweed growth. This can be achieved by planting on the south side of the pond. Waterlilies and other plants with floating leaves can also substantially reduce the level of duckweed. The use of a fountain to disturb the surface may also help