Our system is healthy and the pH, ammonia etc. are all good, but between the roots and solids in it, our grow bed is very slow to drain and is at the point that the surface is 50% flooded (unless we turn off the pump to stop cycling) and starting to leak over the top of one corner...We have a 200 gallon IBC setup w/ ~100 tilapia with 1 IBC grow bed (I'm sure we need more beds but don't have the s…