"Pat" wrote
A settlement tank allows the debris time to sink to the bottom. It will
do about 50% of the work.
A good one will be circular in shape with a cone shaped bottom with drain
for easy cleaning.
The water will revolve in a circle with the clean water leaving at the
top. There are other types.
Try here http://www.aquaart.com/vortex.html


Note: My reply yesterday concerning "settling tanks" was not the same as the
above description, because were were talking about two different types. The
"vortex" type described above removes the material through a swirling action
that sort of flushes out the suspended materials. The divided tank type I
described accomplishes the same thing, but does it by slowing the movement
of water and allowing the suspended and floating material to remain in the
tank.

Both work fine, but a divided settling tank is usually bigger than the
vortex type and needs to be cleaned out from time to time. And many people
claim the vortex variety is very efficient and requires less maintenance.
Personally, I think either one will do the job, it's just a matter of
preference and cost.


Michael
New Orleans, Louisiana USA
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