"moe" wrote in message
ups.com...
Well I hope I have found somewhere that I can get some serious answers
a lot of places either won't answer you or tell you off. My problem I
have a small 500 gallon pond that is only 2 feet deep. I have a 650
gallon pump in it. This pond is in direct sun and my water of course is
staying green. On this small of a pond which has no fish btw... is a UV
Sterilizer Bio Filter really needed or are there chemicals to clear up
my problem? I had a few goldfish in there until we added algaefix,
afterwards within a day the fish were dead.

Some Phosphate absorber might reduce your Algae, but the best solution is to
cover the surface with plants. I had Algae like yours the first year and
bought a UV sterilizer, which cleared up the water nicely. But the last two
years I've had Hair Algae, which no amount of UV will cure. Hair Algae
attaches itself to the rocks/liner/etc so it does not flow through the
filter.