I think I may have an issue with my DE filter. It's a Hayward 48 sqft. Unknown life. Looks older. If i run my polaris robot the pool will look clean when the filter goes off around 8pm. I go outside the following day at 7am. Floor still relatively spotless. Filter kicks on 8am. Come home at 5pm and see residue at bottom of pool. At the end of last season I disassembled the grids for cleaning and inspection. Nothing obvious to me. Does this sound like a hole in a grid? I'm thinking of replacing the entire housing and grid assembly since it's old anyways. If I left the filter on recirc and not filter for a day would that be the next troubleshooting step?
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