Hi,
Settle chambers for mechanical filtration are the way to go, they don't
choke the pump even if dirty. Size and shape can make a difference because
the water must move slowly and not be agitated. The longer it stays in the
settle area the more settles out. A long narrow tank (basin) with the water
entering at the bottom of one end and pumped out from the top of the other
end can be effective. Longer and deeper is better, also consider keeping the
basin covered which removes the amount of water in the chamber from sun
exposure. The correct size is dependent on the ponds volume and pump size. I
don't know how big your pond is going to be but for example, if you are
using a 1500 gph pump to move water through the 70 gallon tank then the
water will be moving too fast to be really effective as a settle chamber.
If you go with the Rubbermaid a wet vac can be used to keep the bottom
clean. Because the bottom is flat using a valve to clean it would be
ineffective, it would work but could take a lot of water.
Remember you can't make one too big but you can make one too small.
There are vortex filters also where the water can move faster but they
'settle' things centrifugally. They also clean much easier. The best of
these are bought, IMO.
HTH, -_- how
no NEWS is good for a reply


"Lisa" wrote in message
om...
I've been weighing between digging a settle chamber out of liner or
using a 70g rubbermaid stock tank I have on hand.
snips
This settle tank will be gravity fed and of course will be buried in
the ground.
But it's FLAT on the bottom.