We tried something on a pool filter which I would appreciate your comments on.
The problem was very fine dust entering the pool via the inlets during vacuuming. If we vacced to waste, there was no problem. Vac to filter, the dust started after a few seconds.
We tried ripping up paper kitchen roll into fine pieces about the size of a postage stamp and dropping them into the pool near the suction port. (Overflow pool). The pieces of paper were drawn into the suction line and were macerated by the pump (minus the strainer basket) and this mush was then trapped in the filter, covering the sand (so went the theory). This should have added an extra fine layer of filtration which would have been flushed out with the crud on backwashing.
Result? Not a darn bit better, the dust still came through.