Intensive BFT fish ponds carry a biomass of up to 30 kg/m3 and daily feed of up to 600g/m3. These ponds generate very high TSS and sludge that has to be drained daily. Pond size is limited by the ability to thoroughly well mix ALL points in the pond and effectively drain sludge. Typical size of tilapia ponds with a biomass of 20-30 kg/m2 is 50 m2 to about 1000m2 . Shrimp BFT ponds carry a lower biomass (up to about 2 kg/m3) lower feed ration and suspended solids. Typical size of such ponds is around 1 ha.