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 Kaldnes Moving bed, 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, to give you even healthier, crystal clear water. AWARD WINNING PRODUCT At the AQUA 2010 Show in October 2010, Evolution Aqua�۪s Pure Pond was awarded the ���Best Water Gardening Product of the Year.�۪ The team of judges voted unanimously in favour of Pure Pond over some fantastic products. They commented that Pure Pond was a ���Unique, innovative product that had clear graphics for ease of retailing with the potential for repeat sales as it is value for money.� This was a genuine acknowledgement from industry professionals that Pure Pond has been a huge success since its launch early in 2010.