Blagdon Bioactive Sludge Control is a natural pond treatment that consumes organic waste for a clean and healthy pond. It is designed to reduce filter cleaning, pond silt, and water clouding, while also minimizing the risk of pond oxygen problems. This product can be used after algae control treatments to safely consume dead algae. Each 250ml bottle treats 2273 liters (500 gallons) of pond water four times, making it an effective solution for maintaining pond clarity and health. It contains one billion beneficial bacteria that break down harmful waste.