Fish and plant friendly water: cleaning bacteria to degrade biological pollutants in the pond (proteins, ammonium/ammonia, nitrites). Healthy pond water: removal of excess nutrients by degradation of biological waste. Prevention of fish losses and algae growth. Easy to use: calculate requirements, mix with pond water in a watering can, distribute evenly over the entire pond. Included in delivery: Bacteria for self-purification, BactoPond. Dosage: 40 ml for 700 to 800 l of pond water,