Sand on Pool Bottom

I just had my liner changed last month. I have been finding loose sand accumulating on top of the liner. I vacuum and it comes back again. Sounds like there is a leak? I am watching the water level.



Hi. A tear, or hole, in the liner will allow some sand to accumulate on the liner. These are the easiest holes to find as they are usually quite large and right in the area of the sand. The ground around the hole becomes mushy fairly quickly making finding the hole even easier.

The other possibility of sand in the pool is if it is coming from a sand filter. If the filter laterals have holes in them, or if your spider gasket in the valve assembly is bad, sand will shoot back into the pool through the return.

If the sand is all over the pool bottom it is probably filter sand. Sand from a hole usually stays in a small isolated area.