Pond Algae Block

The Pond Algae block has been made with the ingredient diuron to work as a preventative of algae growth within your pond or water feature. Each block can treat 800 litres of water, or you can break it into 4 segments to treat 200 litres at a time. Best used in conjunction with a 24/7 pump to allow for water circulation of the diuron to ensure it effectively blocks algae growth.