When you get it off, rub it between your fingers, if it feels slimy it is algae, if it feels gritty, it's not. You can rub a crushed vitamin C tablet, or some ph down on it - if it disappears, then it is from metals.
Re: What are teses tiny rust-like stains?
When you get it off, rub it between your fingers, if it feels slimy it is algae, if it feels gritty, it's not. You can rub a crushed vitamin C tablet, or some ph down on it - if it disappears, then it is from metals.
Northeast PA
16'x32' kidney 16K gal IG fiberglass pool; Bleach; Hayward 200lb sand filter; Hayward pump; 24hrs; Pf200; well; summer: none; winter: mesh; ; PF:7.5
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