We had a UV light on our smaller pond so hooked it up to this one, but we have
now unhooked it again. So far don't need it. We had a Laguna, it had a 16
watt bulb. You would probably need a larger bulb than that. I have seen in
the pond magazines a UV light that is also a spitter, frog or fish. Those
might be something to look into.
Jan
"Our Pond" Page
http://hometown.aol.com/pinkpggy/index.html