Pounds of fish...
I just came from a fall color tour that included a visit to a Tilapia grower.
He uses very high fish densities. He claims 1.5# of fish per gallon! The
water certainly looks brown like my tank siphonings. He has a fair degree of
pumping going on, I would guess 10 gpm in a 3000 gallon tank. He uses a
commercial biowheel sort of filter. His fish look pretty good. He keeps up to
15,000 20g fish in a 3000gallon tank. Talk about bioload!
Dave Gomberg, Experimenta San Francisco CA USA gomberg at wcf_com