bought 36W UV light

My pond is directly exposed to sun light for all day long. With Spring and hot Summer on the way, stronger UV light is definitely needed. Went to Ebay, bought this JeBao 36w UV Clarifier which comes with 2 light bulbs for $99. Seems good deal. Quality of the product is not that great... but last night, I tried to check the UV, seems saw the green light. We will see