Oh. I didnt post the link as a link to a UV filter, just info on the things
that could appear in ponds and what the UV dose strength required to kill
them.

Sam

"Nedra" wrote in message
nk.net...
Sam,
You are talking commercial and Lee is talking residential.
This is the difference as I see it. Do Not take the words
"commercial and residential" as absolutes... Lee knows
what I mean.
Big - big difference!

Nedra
http://www.geocities.com/Heartland/Pines/4836
http://community.webshots.com/user/nedra118
"Sam Hopkins" wrote in message
.. .
Not sure where you are going with this. This list was just a list of
what
UV
filters kill and what UV dose is required to kill them.

Sam


"Lee Brouillet" wrote in message
...
No dispute - none.

It's just that UV's of this type are not the ones that are sold for
pond
use. Whereas you can argue that UV is UV, the difference in what will
be
"killed" is in wattage and flow rates. My (reasonably good) UV is a 40
watt
number rated for 3,200 gph. I push about 2,600 through it. It's for
pond
use
and can not be compared to the ones you listed. Mine cost low 3
figures;
the
ones you reference cost mid 4 figures at the same flow rate.

Lee

Lee

"Sam Hopkins" wrote in message
.. .
Here's a list of what UV filters kill:

http://www.ultraviolet.com/microorgan.htm

Here's how it works:

http://www.ultraviolet.com/whatis.htm