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    what is this gray gunk on my pool filter?

    Wash rinse and repeat indeed. After installing a new filter, no recurrence of this issue, implying a one-time or short-term event.
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    what is this gray gunk on my pool filter?

    Yes, slimy, although solid enough to congeal. Water has remained clear, pool surfaces not slimy. No clarifier used this year. Note I am in Las Vegas, temps 100+ last couple months, pool temp up to 92deg at times. (Note that temp info is a note, for info, for background, for amplifying data...
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    what is this gray gunk on my pool filter?

    I appreciate and understand the inquiry as to what I've added to the pool. But I am reluctant to answer with specifics, because I don't want an answer like "it could be [that]" or "you should use [this]." I have used nothing different this season than in the past four, and have never had this...
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    what is this gray gunk on my pool filter?

    Thank you for the replies thus far. Definitely not sunscreen or other body lotions (zero worn in this pool over the past two months) or baking soda (none added).
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    what is this gray gunk on my pool filter?

    Anyone know what this gray gunk is on my pool filter? (I clean or replace my filter every two months, this was two months of build up in a well-balanced pool which was swum (swam?) in only several times in the past two months. Haven't changed my chems in years, have never had anything like...
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    20190829_152858.jpg