Carl,
Check to make sure you have the proper flow rate going through your UV. If
your rate is too fast, it will not work.

Mike

"Carl Beyer" wrote in message
...
I am getting some serious green water in my little 400 gallon pond. I
installed a 15 Watt Aqua sterilizer with a 350GPH pump the other day,
and quite frankly, I don't feel I am seeing any results. I am mulling
over running my waterfall (800 GPH) through the pump as well.

Anyway, just trying to get an idea of what my patience should be.

Thanks in advance

Carl

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