In article
ohitsystems.ltd.uk,
"Rodney Pont" wrote:

On Fri, 22 May 2009 20:46:26 EDT, Kurt wrote:

There are those UV clarifiers that can be placed in the filter.
It will kill the good bacteria that do all the filter work as well as
algae.

Hi Kurt,
It won't kill any of the filter bacteria. UV clarifiers aren't powerful
enough to kill bacteria, that's a UV sterilizer as used in aquariums.
Even with a UV sterilizer it can only kill bacteria that passes through
the tube containing the bulb and can't kill anything in the filter. UV
sterilizers use about 10W per gallon, for example - can't remember the
figure these days but it is very high compared to a clarifier.

Thanks for that "clarification" :-). I had gotten my information from a
seasoned pond guy. Made sense.

I have an inline 40 Watt UV clarifier. Pretty bright bulb. Made sense
that one that powerful would affect other bacteria.

--
To reply by email, remove the word "space"