The Evolution Aqua evoUV deliver a more efficient and more economical performance than before thanks to their new design. The new range includes completely redesigned 30 Watt and 55 Watt models and a 110 UV, a 15 Watt and 25 Watt model perfect for use on the smaller garden pond, along with a 75 Watt version. Our new range of evoUV pond clarifiers have been manufactured to deliver optimum performance at all times. evoUVs have been designed to clear green water, which is caused by single celled green algae, and prevent it from returning. ? Eradicates green water in garden ponds ? Features highly efficient ballasts ? IP Rating of IPX5 ? Easy to maintain, easy to install ? Ballast located in a fully water-tight cover ? Connects to flexi-hose or rigid pipework ? 6 models; 15W, 25W, 30W, 55W, 75W & 110W