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I have been struggling with sand from my sand filter ending up at the bottom of my pool. At first I thought the problem was due to the fact that there were no check valves coming from the solar panels. I installed check valves (one between the pump and filter and one on the return from the...

Hi, first time post. I purchased a house last year with a 15K gallon in ground pool with solar panels installed on the roof. Last year I noticed what appeared to be sand at the bottom of the pool. I forgot to mention I have a Hayward sand filter. I was busy doing other things and never had a...