TetraPond Fountain Block

Helps Control Algae Growth in Containerized Ponds and Fountains Fountain block helps clear cloudy water and remove algae from ornamental pond/fountain water. Fountain block is limited for use in backyard/homeowner ponds and water fountains. Details: Not recommended for use with live plants. Tetra Pond Block Application Rates Tetra Pond Block Application Rates Pond Size (gallons) - 30 - 80 gallons Dose - 1 block Initial dose may require one block for each 30 gallons For regular maintenance, replace block when fully dissolved (usually about 10 days) Treats (up to) Item Size 16737 6 blocks