Thanks for the question. We are doing more and more in Aquaponics. Flying Skull will eventually make a product specifically for Aquaponics but in the meantime, here is what customers are doing.
Z7 has been tested on KOI, Goldfish, Trout, and other freshwater fish without harming them in any way. The general directions and applications are as follows.
There is no one dosage fits all in Aquaponics as far as Z7 goes. It will take a keen eye to determine if surfaces are starting to clean up. Now having said that, please read my entire answer.
For new Aquaponics systems at startup: Start by using Z7 at 1/2 strength. Use 1/4 mL of each part per gallon of water (1 tsp of each part for every 20 gallons of water) in the system. Z7>should be added every week until biofilm starts to form on surfaces. If the bio-film buildup is occurring, try increasing the application intervals rather than increasing the dosage (1/2 tsp or 7.5 ml each part per 20 gallons every 4 days). The dosage and interval of dosage will change as fish populations grow and the ability of plant life to rid the system of nitrates, phosphates and other minerals will also change. Always use the least amount needed to maintain the biological balance of the system.
Apply Z7in a sprayer or appropriate device to the top surface of the water in the holding tank. Apply it to the entire surface, don't just dump it in one spot. If it takes 8 ounces of each part of Z7 to treat the tank, add the 8 ounces to a quart of water and apply the diluted Z7 to the tank’s water surface. For Aquaponics systems that are currently running: Start by using Z7 at 1/2 strength. Use 1/4 mL of each part per gallon of water (1 tsp/5 ml of each part for every 20 gallons of water) in the system. Z7 should be added every three to four days.
IMPORTANT: The water tank may show signs of clouding if the Aquaponics system was very dirty. This water may be dumped as it may have toxins in it. It is not unusual to have to dump water tanks several times before the system comes back into biological balance.
Apply Z7 in a sprayer or appropriate device to the top surface of the water in the holding tank. Apply it to the entire surface, don't just dump it in one spot. If it takes 8 ounces of each part of Z7 to treat the tank, add the 8 ounces to a quart of water and apply the diluted Z7 to the tanks water surface.
If after 10 days using the Z7 at half strength and the system is not showing signs of 'clearing up', increase the dosage to 1 1/2 tsp (7 ml) per 20 gallons of water in the system. If after 30 days we are still not seeing clear signs of cleaning, increase the dosage to 2 tsp of each part for every 20 gallons of water. Once the system starts to clean up, start to reduce the amount of Z7 dosage.
IMPORTANT: Always use the least amount needed to get the job done. If you are seeing signs of the Aquaponics systems slowly getting results from lower dosages of Z7 be patient and let time do the job, not a higher dosage.
IMPORTANT: Adjust the dosage just enough to stabilize the system to help keep it free of inanimate slime on filter and tank surfaces.
To determine the size of a pond or tank use this measurement:
Square/Rectangle Pond:
Multiply the length times the Width times the average Depth. Then take that number and multiply it by 7.481. This will get you quite close to the number of gallons of water in your pond.
Round Pond:
Multiply the top diameter by the bottom diameter. Multiply that number by the average depth. Then take that number and multiply it by 7.481. This will get you quite close to the number of gallons of water in your pond.