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    SWG with normal chlorine level but have a few small green spots on skimmer, lights, and floor

    Location: Northwest Missouit Test Kit: Taylor 2500 Current Levels: FC: 2.5 TC: 2.5 PH: 7.6 Alk: 100 CH: 110 CYA: 40 A few weeks ago started seeing green spots. SWG was only set at 45%. Chlorine level was pretty much 0-1. Vaccumed with robot, brushed and shocked. Raised SWG to 60% and seemed...