TetraPond® Pond Sludge Removal Blocks with Clear-Zyme™ Technology Aqua Ultraviolet Outside Dimensions are12" wide x

Outside Dimensions are12" wide x 15" long x 10" high

Description Compatible Filter Air

coating fish food prior to feeding

Colors vary

TetraPond® Pond Sludge Removal Blocks with Clear-Zyme™ Technology Aqua Ultraviolet Outside Dimensions are12" wide xTetraPond Pond Sludge Reducer with Clear Zyme Technology contains billions of beneficial bacteria and enzymes that quickly break down the unsightly wastes that accumulate on the bottom of ponds as a sludge layer. Sludge Reducer blocks are also ideal when setting up a new pond and during the spring start up and fall shut down of established ponds. The blend of bacteria and enzymes is beneficial for developing and maintaining the pond's biological