Shake well before use. Add 50 ml AlgoFin for every 1,000 litres of pond water. For best results, use a stick or similar implement to evenly mix the product into the water. Remove as much algae as possible before and after treatment using a net or stick, as dead algae impairs the water quality. Ensure the pond is well aerated during treatment. Do not filter using UV clarifiers or activated carbon for at least seven days after administering the product. During treatment, do not undertake any water changes for approximately four weeks. For prolific algae growth, we recommend repeating the treatment using half of the stated amount after approximately four weeks.