Pure Pond are biodegradable balls, crammed full of live bacteria that are slowly released when they are needed most. With over 8,000,000,000 bacteria per litre of Pure Pond Balls, your pond will shine even more than normal, especially if you add them monthly into the K1 moving bed media, or into any other type of filter you may have.When you introduce the Pure Pond balls into the biological chamber of your Nexus, they become one with moving bed, agitating alongside the K1 media, just waiting to smooth out any peaks and troughs of the Ammonia/Nitrite cycle. The Pure Pond balls also contain natural enzymes which will help to breakdown organic waste, leaving your pond with healthier, crystal clear water.For best results add to the biological chamber in the filter, ideally contained within a filter bag.• 1000ml treats ponds up to 20,000 litres.Pure Pond is not intended to clear green water. An appropriate UVC is recommended to clear green water.
