Haquoss L5 is a product specially designed to prevent the onset of filamentous algae in the pond. This problem begins with the appearance of greenish spots on the bottom and then evolves with the growth of the same to form algae, usually in filaments, which grow several centimeters reaching the surface if timely action is not taken. This phenomenon is mainly due to both the irradiation of sunlight and the presence of organic residues (food scraps, fish feces, rotten leaves). Regular use of Haquoss L5 ALGAE CONTROL is essential to reduce this problem in the summer season and it is very important to use the product at the first appearance of the problem. Harmless to fish, crustaceans and plants. DOSAGE: Shake well before use. NEW WATER: 1 cap (5ml) every 50 lt. PARTIAL WATER CHANGES: 1 cap (5ml) for every 50 litres of water replaced. MAINTENANCE: 1 cap (5ml) every 100lt once a week.