The Neo Clean is a highly effective water clarifier that quickly and efficiently removes small particles, resulting in crystal clear water regardless of temperature or pH. For best results, use 5 ml of product for every 80 liters (21 gallons) of water. This product may slightly decrease the pH of the tank and it is recommended to change the water after use. Additionally, shaking the product before use is advised. Some slight odours and natural ingredients may be observed, but this is normal. Please use only for aquariums and keep out of reach of children and pets.