POND BUILDER STARTER 32-oz CAREFREE ENZYMES: POND BUILDER STARTER 32-oz $17.99 SKU: CFE94500 QTY: POND BUILDER STARTER 32-OZ When ponds are filled with fresh water, bacteria is rarely found Pond Builder Starter is a mix of natural, which will seed the bio filter. Adding Pond Protector at the same time will kick start the bacteria to work more effectively in breaking down contaminants faster.  Application: 32 oz. bottle treats 2,500-6,500 gallons.