Evolution Aqua UV Steriliser UVC Clarifier Filter Eco Green Water Pond 55w
You can choose from either the Evo15, Evo25, Evo30, Evo55, covering a wide range of pond sizes from your little wildlife pond strait to your large Koi ponds. UV 15W bulb 25W bulb 30W bulb 55W bulb 75W bulb 2 x 55W bulbs.