Tetra Pond Sludge Reducer Block

Tetra Pond Pond Sludge Reducer with Clear-Zyme Technology blocks are bio-active cleaning blocks that will keep water clean and clear by breaking down wastes which accumulate on the bottom of ponds as a sludge layer. Keeps pond water clean and clear Bio-active cleaning block for pond maintenance Breaks down wastes which accumulate on the bottom of ponds Also great to use during the setup of a new pond and the spring start-up or fall shut-down of established ponds. The blend of safe enzyme producing bacteria helps develop and maintain the pond's natural biological balance.Dosage: 4 blocks treat up to 1,000 gallons.