I had a serious algae problem. Pool water is now sparkling but I'm noticing the sides of my liner have been stained green. How can I get it back blue. Is there a special kind of brush I need or something I need to add to the water. 24 x 52 ag round.
If you have recently completed the SLAM process (passed the three criteria to be done SLAMing - see red lines in my sig), then maintaining the FC slightly above target level should continue to lighten organic stains.
Keeping a slightly higher fc level should help clear the liner of organic staining. It will take some time though. Brush the pool daily with a nylon brush that butterfly suggested.
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