07-04-2008, 05:42 PM
posted to rec.ponds.moderated
|
|
external usenet poster
|
|
First recorded activity by GardenBanter: Apr 2008
Posts: 93
|
|
How long does a UV clarifier take?
My bulbs glow blue as well. In bright (ambient) light that can be hard
to see, but it's very apparent in low light.
Dave
|