About the 55w Double-Ended UVC Bulb - BOGOF Manufacturer: UVC Bulbs ADD ONE 55W BULB TO YOUR BASKET AND RECEIVE TWO!!! This 55w double-ended UVC bulb is suitable for the following UVCs:Lotus 55w THESE BULBS DO NOT FIT EVOLUTION AQUA UNITS OR TMC (Proclear) UNITS If you require EA-suitable bulbs go to this page: 55w EA Double-Ended UVC (note: these bulbs are not BOGOF).