Aqua Balance Spheres are designed to reduce harmful Ammonia and Nitrite levels quickly and effectively. Each sphere is packed full with beneficial, friendly bacteria that will help maintain a clean, healthy pond. Millions of enzymes in the sphere will help reduce organics in your pond, resulting in clearer water.Ideal for use in a koi or wildlife pond, the sphere starts working as soon as it hits the water. You can put the Sphere either directly into the pond or, simply drop one in your filter.Using the Sphere after chemical treatments have been added to your pond will help restart the biological activity in your filter. Also beneficial when feeding heavily during the summer.Please note that some pond treatments will render the Sphere ineffective.Store at room temperature. No need to switch off UV Clarifier. This product is not intended to clear green water.Wash hands after use and keep away from children. Do not swallow.