so still, shouldn't it take a considerable dent out of the free floating
algae spores? Wouldn't this slow the appearance of algae as it would not be
able to spread in the tank nearly as fast?
"LeighMo" wrote in message
...
wouldn't it kill algae spores and not allow the algae to spread in the
tank
as easily?

Not by my experience. UV sterilizers don't actually make the tank
sterile.
Some people claim that the fishes' immune systems get weak, because
there's no
germs to keep them revved up. Or that they kill off the biological
filter.
Not true. There's plenty of bacteria, spores, and the like in a tank with
a UV
sterilizer on it.
The UV sterilizer can only kill the stuff that's free-floating, and it
doesn't
kill 100% of that.


Leigh

http://www.fortunecity.com/lavender/halloween/881/