POND BUILDER BIOSPHERE (LARGE-SIZE) CAREFREE ENZYMES: POND BUILDER BIOSPHERE (LARGE-SIZE) $11.50 SKU: CFE95411 QTY: Click here to save 5% off of your order! POND BUILDER BIOSPHERE (LARGE-SIZE) New ponds lack natural bacteria, Mother Nature's natural cleaning agent. Pond Builder is designed for pre-cast inlay ponds. Bacteria need a home to grow; the floating biosphere provides this home. Ponds need a mechanicla or biological filter; the floating biosphere becomes that bio-filter. Containe natural bacteria to kick start new ponds. Enzymes break down the microscopic matter and organic substances for bacteria to feed on. Use in conjunction with Pond Protector for maximum results.  Application: 1 Lily Pad will treat 1000 to 5000 gallons.