I have an inground vinyl liner pool, about 20k gallons. It has a Hayward DE filter, clear water, and chlorine and PH look good. The strange thing is that I'm getting sand at the bottom of the pool. It's tan/brown, gritty and granular, so it's def not algae. I've cleaned it out a couple of times, but it comes back in a few days. Any idea where it's coming from?
Sand In The Pool
- Thread starter ted13b
- Start date
Could just be dirt/dust/pollen... have you done an overnight FC loss test to make sure it's not dead algae?
From your description, it sounds like pool filter sand. Put a "catch bag" made from nylon hose or something similar over your returns and see if you can catch it at the return coming into the pool. That'll confirm or deny it's from the filter.
I don't think it's algae because it's very hard and granular. Also, I don't have a sand filter,it's a DE filter.
If you have pavers around your pool, I an guessing it is the polymetric sand they use between them.
No, there's a concrete deck around the pool, no sand. That's what has me so puzzled. Is it possible that algae or something organic is combining with the DE to make a sand-like substance that's ending up in the pool?
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