"Go Fig" wrote in message
...
In article , Benign Vanilla
wrote:

"dkat" wrote in message
. net...
Something I forgot to mention... While the UV may give beautifully
'non
pea
soup' water it does nothing to eliminate the wastes from
fish/animals/etc.
That is another reason I am so happy with my veggie filter. So even if
you
do go the UV route I still think there is more than one reason for a
veggie
filter (removing silt and toxins). By the by, my lone little hyacinth
is
already clearing things up (put it in this last Sunday).
snip

YES!!! Very important point. UV clarifiers are NOT filters. If anything
they
just contribute to the bioload of the pond.

Hows that. I can think of few things that deposit more bio-load than a
pond full of suspended algae. When it is finally staved of a food
source and dies away, it settles to the bottom of your pond... it is
not, for the most part, consumed by your veggie filters. A sand filter,
however can pull it from the pond.

UV light inhibits the algae from reproducing, that is cutting the
bio-load.

My point is that UV clarifiers kill algae that pass through them. Dead algae
can become food for hungry live algae. I am not saying UV is bad, don't get
me wrong. I am not saying that. I am just saying that UV clarifiers do not
filter the water, they kill things in the water, and then let the things
move right on through. Filtration to me, IMHO, is the removal of a from b.
UV just kills a and leaves it in B. UV is a supplemental tool, not a
replacement for filtration.

BV.