All right, I'll back off: you CAN buy UV *sterilizers* for water, designed
for household or institutional water supplies. To find one that handles the
kind of flow that ponds have you need to go to a 285 watt UV that will
handle about 3,000 gph and costs $3,688.00. That's HARDLY in the same class
as the 40 watt or less UV's that most ponders use. Perhaps I erred in
"assuming" that you wouldn't have a $4000 UV attached to your pond. Mea
culpa.

Lee

"Andrew Burgess" wrote in message
...
"Lee Brouillet" writes:

UV's will kill single cell algae, the ones responsible for "green water".
MOST UV's, and I make that statement with confidence
- do NOT kill bacteria.

So convince _us_. Got any references?