George wrote:

Hmmm. I've never used UV and I've always been able to see the bottom of
my pond
(45" deep). If I use a UV filter, will I be able to see 'past' the
bottom? lol

Perhaps :-)

I don't believe in UV either, but I have never expected to see the bottom of
my pond (about the same depth, perhaps a little more). I can see it just
fine in the early spring, and occasionally in the summer, but algae's a
normal part of a pond. It doesn't bother me.
--
derek