For larger grow beds i recommend using 1.5" pvc waste pipe. measure the size of the 1.5" pvc socket. now drill a hole in the bottom of your grow bed, ideally in the corner that will sit above your sump tank. the hole must be approximately 3mm wider than the socket all the way around. now, find an offcut of wood. 15cm x 15cm is perfect.. Have added a new grow bed into the aquaponic system & thought it might help others to see how i like to set them up. am, using rock this time so thought it w.... The system is equipped with a timer that enables the water to flood the grow bed every 15 minutes. the water is drained back into the fish tank. the system uses additional lightning for both tank and the plant bed, and an improvised aluminum foil light box for increased plant growth..
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Step 2 - add grow beds in a ratio of 1:1. start with a grow bed ratio of 1:1, which is 800 square feet of grow beds for an 800-gallon fish tank. as you add more fish, increase the grow bed square footage to as high as 4:1. an 800-gallon fish tank can support 3,200 square feet of grow beds. step 3 - increase the ratios of gravel and beneficial. Grow bed size = 2 people x 2 grow beds/person (26.66sf) = 53.32sf of total grow bed i will be using 4 ea. - 13.33sf ibc grow beds. since we know that (1 m2 = 10.76sf) 1 bed for leafy greens - this ibc will require;.
