I had similar experiences. I kept a piece of filter cloth on the tray of my
sump. Cleaned it every day and intentionally sifted the sand to raise the
fine particles. The water clarity improved greatly after a few days. I then
eliminated the filter cloth and all is good.

John

"Pszemol" wrote in message
...
"Rod" wrote in message
...
If your higher priority is to have crystal clear water than
you have to include very fine mechanical filters (cloth socks)

I disagree,.. Yes, for a time you will have particulate matter in the
water
collum, but after a tank has matured for a year or so, the particulat
mater
will be better filtered out naturally by filter feeders.

I guess we have different experience...
- I do not have mechanical filters in mine and my water is dusty.
Every time my fish feeds from the bottom sand there is cloud
of dust created which stays in the water column for a long time.
All crabs which sift the sand looking for food create small
fountains of dust going up to the water column... When the big
fish ****s to the water it gets spread all over the tank by pumps.

I do not know how many filter feeder animals you need to keep
in the tank to make the water clear of this kind of dust...
Maybe I need to see your tanks someday to learn how to do it.