That seems UNREAL! My quarter acre pond wouldn't produce 10% of that biomass.
How does he/you achieve that production?
There is very little production in the pond from the stocked fish - the bottom is clay and the sides are VERY steep - steep enough that the fish can't make beds.
He feeds the fish daily and he adds Fatheads & Golden Shiners in the Spring and Fall. Like I said earlier, he keeps close track of water quality and has the ability to add water from a well to flush out excess nutrients. He has a Vertex Bottom Diffusion aeration system plus a Volcano type surface agitator that he runs when the water temps are 70°F and above so the O2 stays high. He doesn't add Tilapia but he does use a peroxide based algaecide. When the algae floats he kills it then turns on the water and flushes it out of the pond before it sinks and decomposes.
Water clarity stays 18"-24" most of the year due to a number of 24"+ koi in the pond.
