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Old 06-04-2008, 05:10 PM posted to rec.ponds.moderated
[email protected] dr-solo@wi.rr.com is offline
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First recorded activity by GardenBanter: Mar 2007
Posts: 1,004
Default How long does a UV clarifier take?

They dont become ineffective in a year.
The slower the flow the more likely that the algae will be exposed the correct amount
of UV to cause clumping.
the good bacteria are not in the water, they form colonies ON the biofilter material.
Ingrid

On Sat, 5 Apr 2008 19:14:56 EDT, Pond Addict wrote:
The thing about UV is that the bulbs really need to be replaced every
year because they become ineffective,

It's also important to have the flow high enough so that the
water is getting changed over at the correct rate too. I'm not sure of
the requirements or size limitations for the Tetra UV.
The first thing I'd verify is that you really want to put the UV
*before* your filter.

Doesn't UV kill the good bacteria?