Natural pond water balance: granulate to stabilise the pH value in the pond between 7.5 and 8.5 to successfully combat algae in the garden pond Easy to use: tells you the required quantity, you spread it on the pond Life insurance for fish and plants: prevents fish loss during algae blooms No risk for fish and plants, ecologically balanced: precise increase of carbonate hardness to stabilise the pH value and to provide the best start conditions for the anti-algae agent to work effectively