First time pool owner. Have a 16x48" intex ultra frame, 1500 gph pump/A filter, and saltwater setup. Kept getting sediment collected on the bottom the pool. Stir it but it would just go through the hand skimmer. Was about to order a sand filter with bigger pump so I could vacuum also as my setup didnt come with filter vac and didn't think my 1500 pump would do it well. Anyway, put a white athletic sock over the return and just stirred up the pool getting the particles in the water versus on the pool bottom. The sock has totally removed all of the grit as I guess it was just going straight through the filter. I do keep filter clean and all that . . But just something as simple and cheap as a sock has the pool absolutely clean and hasn't interfered with chlorine production or any ill effect. Got the tip about the sock here . .so just wanted to say thanks. I still may upgrade to sand . . But it won't be to water/grit conditions. Unbelievable.