Aquaponic system design parameters: fish to plant ratios (feeding rate ratios) wilson lennard phd the only really predictable ratio associated with aquaponic system design is based on the determine the volume of the fish tank(s) we need.. Here are my top 10 aquaponics how to tips. 1) choose a media bed. determining the ratio of grow bed to fish tank. as a basic rule of thumb, you should start with a 1:1 ratio of grow bed volume to fish tank volume. once your system starts to mature within 4-6 months, you can increase it to 2:1 if you really want to. to find out more. A group of us are looking into creating a 8’wx96’lx3’d tank for an aquaponics system and the fish to gallon ratio is getting the best of me. i haven’t seen measurements and or calculations for something of this size..
The general rule of thumb of the stocking is to stock 1-inch length of fish per gallon of water in smaller tanks (or about 25 mm of fish length per 4 liters, or up to 1/2 pound of fish per gallon of water used in larger fish tanks with proper filtration systems.. Fish are most comfortable in large tanks, so estimate at least 1 800-gallon tank for a profitable aquaponics operation. step 2: add grow beds in a ratio of 1:1 start with a grow bed ratio of 1:1, that is 800 square feet of grow beds for an 800-gallon fish tank.. A two, deep-media grow bed system can support about 40 pounds of fish with our current design of ample fish tank and grow bed aeration, and works out to about 3.3 gallons of bio-filter grow bed media (hydroton) per pound of fish..
