Aeroponics Extreme

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Aeroponics Extreme

THE AREA: On top of a mountain in Southern Oregon.
THE STAFF: Devin Richman, Kenton Price, Jackson McCormack, Troy Cromwell
THE OBJECTIVE: To develop the most efficient expand established possible with a limited budget combining the advantages of a climate-controlled greenhouse with the most effective and advanced hydroponic expanding approaches available for beast tomato plants!
This system irrigates each plant in three different means, yet it’s blissfully basic. It’s essentially a modular re-circulating system which incorporates: shallow water culture (SWC) aeroponics misters and aeroponic foggers.



Each plant gets the VIP treatment, basking in a 20 gallon Rubbermaid container! Wow! There are 70 plant containers in sum total. They are all joined together via 3/4″ tubing. Nutrient option is pumped from an underground 55 gallon reservoir with a 1546 gallon per hour pump to the middle of each container. Within each container there’s a large 3/4″ flexible PVC irrigation ring with 3 x 180 ° misting nozzles ready to rumble. When the misters are on, the container gets fulled of small droplets of nutrient solution, the droplets that do not get soaked up by the roots fall to fill the bottom of the containers. As the container fills past 2.5 gallons, the solution reaches an overflow tube, away it returns through 3/4″ PVC pipe back to the primary tank.

After running a few tests Devin adjusted the return pipeline to the reservoir to make it a more direct return. The foggers are set to spray for virtually 7 mins on and off for 4 mins. This timing is deliberately adjusted so that occasionally there is only fog, often fog and sprinklers, and in some cases sprinklers half the moment and fog half the moment. The timers are set so that different watering strategies are triggered at different times in different combos. The reasoning is the plant will not get too utilized to anything and it additionally allows the root zone to dry a little, motivating the root hairs to go in search for food. This makes the roots really steadfast, white, and durable.

As quickly as the solution returns back to the 55 gallon from the overflow the system kicks back on. The return takes virtually 4 moments. When spraying the roots, the solution arises from the 55 gal reservoir, and it takes simply 7 moments to empty the 55 gal. This is the optimum watering duration that Devin feels he could achieve without getting a larger tank.

In the bottom of each container is a 4″ air stone, these are linked to 4 x 750psi air compressors to infuse the 2.5 gallons of nutrient option with oxygen rich bubbles. Sounds simply like an interesting re-circulating system right? Well right here is the key to this high yielding system …

Each container has an aeroponic fogger floating simply under the surface of the vitamins and mineral solution. Each fogger has three disks. These foggers are on a 5 moment on, 5 minute off cycle to create a remarkably fine mist or ‘fog’ with a fragment size of 3-5 microns! Such a great fog of nutrient solution develops supercharged roots with an abundance of fine root hairs. These root hairs can use up water and nutrients at a quick rate creating explosive plant growth. This technique of making use of ultra sonic foggers to deliver a nutrient fog to the roots has been recently called ‘Fogponics’, although formally it falls under the banner of aeroponic cultivation.

Aeroponic foggers been available in various forms and sizes but all use the same technology. They work by delivering ultrasonic frequencies to ceramic disks which sit simply below the area of the water. These ultrasonic frequencies shake the disk which oscillates the water above developing an ultra fine fog. This fog has such a small bit size that it feels dry to the touch yet it could effortlessly pass through roots without totally saturating them.


birds-eye-view1) Foggers


The major disadvantage of making use of most foggers with nutrient options is they can come to be stopped up really rapidly with vitamins and mineral precipitate. Even utilizing foggers in difficult water alone can cause a quick construct up of lime scale, let alone including mineral salts to the mix, so how does this extreme aeroponic system get around this?

With trial and mistake and with some aid from Ryan Clout at Sunflower Supply and the on-line garden online forums, these crazy cats discovered a solution. Devin located a business online selling Teflon coated disks that are much longer enduring and keep residues from developing on the disk surface. This drastically prolongs the life of the foggers minimizing the requirement for consistent cleaning and regular replacements.

As mentioned formerly, the foggers require to be simply below the surface of the water in order to produce the ultra-fine fog. To enable the water level in the container to fluctuate while still permitting the fogger work it came to be clear that the fogger would have to drift. So equipped with a small budget plan and a journey to the dollar store, the drifts for the foggers were created from play snorkels and net cups for only a dollar for each fogger!

2) Option Temperature

While in operation, the foggers create a considerable quantity of heat that gets absorbed into the nutrient solution. Even with the solution distributing from a huge reservoir around all the containers, the temperature of the option in the bottom of the containers was rapidly rising to past 75 ° F. Ideally the nutrient option should be around 65 ° F for superior levels of dissolved oxygen and nutrient uptake. This was a difficult nut to split. The means forward was to cool the vitamins and mineral solution and, being and inventive bunch of cultivators, they chose to make their personal homemade water chiller.

Using an old fridge (2ftx2ftx4ft) as the cooling chamber the team pierced two 3/4″ holes with the casing, one near the leading and one near the bottom. The cooling system was produced by constructing a coil made from 25ft of aluminum tubes. This fitted perfectly into a five gallon container which had a pierced hole at the top and bottom. This permitted the ends of the coil to come with. Then, they fed a 1/2″ hose into each of the holes in the fridge, used silicone to secure the holes, and linked them to the coil lines. After making sure the hose and coil were leak-proof, they made use of non-toxic propylene glycol antifreeze to fill the five gallon bucket and popped a lid on it.

This homemade chiller is found next to the underground 55 gallon reservoir with the upper 1/2″ hose pipe connected to a pump in the bottom of the tank and the reduced hose draining the cooled solution back into to the reservoir. This consistent circulation of vitamins and mineral solution being pushed with the chiller developed a continual nutrient option temperature in the tank of 60 ° F, with the containers stabilizing at 70 ° F, keeping the heat produced by the foggers under control.

3) Environment

Being in the heart of Southern Oregon, air temperature throughout summertime is additionally a concern for this aeroponic set-up. The roots are particularly susceptible to extremes in temperature as there is no growing media to serve as insulation. On a good sunny day, an outside temperature of 75 ° F could quickly produce up to 100 ° F in the greenhouse which’s with the 24 inch ventilation follower and both 24 inch passive shutter inlets open! To keep temperature down on hot days a 25,000 BTU air conditioning unit was integrated. It additionally doubles up as a heater for those cool evenings in winter.

under-ground-res-with-chillThe secret to the system is the hybridizing of SWC, aero-sprayers, and the ultra fine fog developing by the foggers. Studies in the late 90s by NASA have shown that solely making use of ultra sonic foggers to feed plant roots creates an out of proportion amount of root hair with significantly less lateral root growth, making ‘fogponics’ less appropriate for prolonged plant growth– i.e. bringing plants to complete maturation. By incorporating the two aeroponic methods of fogging and misting upper root zone and making use of SWC to supply water, dissolved oxygen and nutrients to the reduced branching roots, they have actually accomplished the most effective of both worlds.



One key aspect of this hybrid system that Devin is keen on keeping is a high valuable germ count, especially predatory nematodes, in the expanding media and vitamins and mineral solution. The advantageous nematodes are an outstanding killer of fungus and germs, which Devin makes sure will help keep the system clean.

To provide an excellent residence for the germs to hang out and type, they have developed a media mix for the net pots of 5 components Hydroton to 1 component ‘loose fill’ Sure To Grow. Devin and the crew feel that this mix offers them with the ideal surface area for the microbes to stay pleased.

To inoculate the system with lots of helpful microbes they brew their really own worm compost tea!



Action 1: To 16 gallons of reverse osmosis water, include 1 fluid oz (28.5 ml) of fulvic acid and 1 oz of makers’ yeast (utilized for home brewing beer and wine).

Action 2: Add 2.1 fluid oz (60ml) of Humboldt Honey Hydro ES to offer food and energy for the microbes.

Action 3: Add 4 tsps (20ml) of Cutting Edge Solutions’ calcium carbonate, the microbes to enjoy it!

Step 4: Take 15″ x 23 “brew craft fine display mesh bag and add 2.5 pounds of worm castings.

Step 5: Add and air stone (connected to an air pump) to the mix.

Action 6: Steep the worm casting bag in to solution for 72 hours.

Step 7: Eliminate the bag, offer it a few squeezes and let the solution brew for another 12 hours.

Action 8: Prepare the vitamins and mineral option, Devin utilizes Cutting Edge 3 part formula.

Action 9: Include the 16 gallons of fresh worm tea to 300 gallons of nutrient option.

Utilizing this method the crew handle to brew a full 16 gallons for $ 15! With this fresh brew of advantageous microorganisms Devin states you cannot include too much. They even spray the mix on the plants in vegetative development stage which they have discovered works best orderly or at a minimal amount of 1 part tea to 5 parts water.

Making use of a plant practical kind of calcium carbonate actually works wonders. Germs like to have some kind of nutritional buffer, whether it’s a bit of potassium or even phosphorus, they just require some kind of mineral to feed off. Devin saw that his nematode populace is 10-15 % higher when he utilized calcium carbonate. He utilized Cutting Edge Solutions’ calcium carbonate– as soon as you open it you really should use within eight weeks, otherwise it could get susceptible to mold.

Utilizing this focused homemade worm-tea the raisers discover they just have to utilize 1/2 to 3/4 strength nutrient option! The primary reason is that the worm-tea includes a huge population of predatory nematodes and protozoa (single celled organisms that are discovered across several kingdoms). They are non algal, and non fungal (such as amoebaes, ciliates, and flagellates) and are the number one killers to germs and fungi alike. These little worm-like parasites are nasty little buggers. They are heterotrophic which means they could not produce their very own food. Rather they hunt germs and fungi while remaining benign to you and your plants. They find and shred apart the fungal mycelia and bodies of bacterial organisms which then offer plant readily available nutrients and minerals to the root system. It’s a stunning circle!


Freshly brewed, actively-aerated compost tea and compost tea brewing machines with ready-to-use brewing kits are also offered from a number of companies.

We advise you look into:

To finish the useful germ mix, they include other helpful fluid additives. These include Canna’s Cannazyme and Botanicare’s Aquashield. Also, have a look at Sub Culture B from General Hydroponics.

Every 2 weeks they alter out the nutrient solution for a fresh batch. To empty the system all they have to do is open up 3 taps– this allows the option to run out through pipe work onto an outdoor veggie plot, placing even the ‘waste’ nutrient to great use. To fill the whole system they prepare a 300 gallon reservoir which pumps the fresh option to each container.

Devin has considerable hydroponic experience with flood and drain tables, drain to lose systems, Deep Water Culture, aeroponics, soilless and soil yet locates this hybrid shallow water culture/aeroponic/fogponic system the most hygienic, much easier to clean with the least quantity of nutritional and pest problems.

To provide support for the plants they make use of tomato cages fitted into the exterior of the net pots. This provides wonderful support and enables the branches to be skilleded out, which in turn makes it possible for the plant access to more light, better support, even more growth and even more fruit !!!!

The assemblage of all these high yielding techniques with a couple of tweaks has actually offered Devin and his staff a cost effective homemade system that that they could actually (and physically) expand trees in!



Special thanks to Ryan at Sunflower Materials (www.sunflowersupplies.com) for his support with the ultrasonic foggers!

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One Comment

  1. Interesting. I noticed the disk on an ultrasonic humidifier I have would get covered in a soft clump of minerals and stop working even with RO water so I’m going to mount the foggers on the tops of the containers for accessibility. Perhaps dripping the nutrients directly on the disks would prevent that “clumpage” since it is easy enough to brush off with an artists paintbrush. Thanks for your ideas!

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