The 100# plus rates were used with some considerable success by Jeff Slipke when he was at SEPM and is easily researched on their website...20# per acre is going to be for algae control...not for mass forage production. Both are possible, but the most "common" reason to stock Tilapia is primarily to control algae with the forage being an added benefit...when stocked FOR forage production, it is done quite differently with more knowledge needed along with supplemental feeding being needed to reach goals desired....Even in Texas, Mozambique stocked at 20#/acre would be considered "typical" stocking mainly for algae control.....Give Todd Overton a call, he will help you out.
