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  1. S

    Small pin head size brownish spots

    Pool is 20 years old in ground fiberglass with salt and a sand filter. Pool is 11500 gallons levels are FC 10 TC 10 ALk 120 PH 7.8 TH 250 CYA 50 Salt 3000 Water is very clear and sparkly Had tested for metals at pool store and none present according to them Tried ascorbic acid on spots. Rubbed...
  2. S

    Best caulk

    Just wondering what the best underwater sealant to use is I need to reseal my skimmer and a underwater light so I need a sealer for below water level Thanks