Aaron.
I used a similar product to the "Bioclean" in the past and after harvesting just over 500 lbs of trout to almost 12 lbs and then draining the pond I had NO SLUDGE whatsoever. There could have been other factors but I can't help thinking the bacteria may have had something to do with it. The product I used back them was "Aquatron" from another company. However I don't do business with them anymore for reasons I can't disclose.