"David W.E. Roberts" wrote in message
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"tuin man" wrote in message
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"David W.E. Roberts" wrote in message
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If anyone has built an effective filter to remove silt, I would be
interested in the design :-)

Cheers
Dave R

Hmm not sure if this is what you want, but I might have one. I'll have
to
check the make/model later. Basically, its a pump that can handle
semi-solods. Silt, if dispersed throughout agitated water does get
pumped.
But not the kind of stuff that is dense enough to need to be shovelled
out.

It isn't the pump I am looking for - I have a pump that will shift murky
water, as well as the standard pond fountain pump with an extra take off.

I am looking for a device to pump water into which will remove the silt
then
return clear water to the pond.

The main issue I see is that an efficient filter will soon clog up with
the
amount of silt it is removing.

Cheers
Dave R

P.S. a short burst with a 'wet and dry' vac might clear silt from the
bottom
of the pond - plus fish, weed, lining.... ;-)

Ok, I thought the pump answer seemd a bit toooo obvious (-:
But since I found out what I have, it's a ISIS, capable of pumping
"suspended solids" up to 20mm in size.
Given that you've not had much response, might I suggest you try either a
swimming newsgroup, or a swimming pool goods and services outlet.
Your idea about the sand filter if as close as I've seen adopted for the one
swimming pool, whose filtration system I once saw opened up.
The big difference being how the water enters the tank. It sprayes all round
it, rather than the glug glug head-on torrent from a pipe.
Depending on the size of your silt, how about going for a slower filtration
by using grit first and then later sand?
I was even thinking about suggesting using one of those metal incinerators
with legs and the holes around the end and bottom, to hold the grit/sand.

Patrick