Ok so I am working with my first AP system. 275 gal IBC as fish tank. 2' X 4' X 12" (11" media) times 2 Grow Beds. 2' X 4' X 10" (10" media) single bed. 4 air bubblers in fish tank. 10 constant flow terrace bucket system. (bucket half full of clay pebs, water falls in top washes pebbles exits bucket thru bottom, No Standing water ((not nft or raft))). So I tried to use Murry's technique of add…