After fighting with green pond water for a few years I decided to try a UV light. Shipping was slow but... Once item arrived I had to call manufacturer for instructions for use. Item included assembly directions but none how to hook up to pump/filter. Once in place I could see a difference within 24 hours and within 5 days my pond was clear! Good product just needs better instructions. Would buy again!

The pond water was greenish brown with tons of algy growing - within one week water was crystal clear and could see the Kio fish again.Thanks

I'm using this in a small pond that uses a 1/2 whiskey barrel to create a waterfall. I simply put the filter in the whiskey barrel and inserted the tube from the put into one end (it slide right in). I didn't need to another tube on the outtake. It has been running for about 2 wks it has noticeably reduced the algae.

I have had this lamp installed in my 160 gallon pond for about a month now. I spend two years fighting a losing battle against blue-green algae. I tried everything from chemicals to changing the filter twice daily. Nothing came close to working but after two days of using this uv lamp my pond was noticeably clearer and after a four I could see the bottom. The lamp works well for a pond my size. Other reviewers have noted problems with the fittings. They were a standard 3/4 and I found no problem picking up hose from the garden section of the local Home Depot. For the adapters, if needed, check out the plumbing isle. I would recommend this product to a friend.