Re: fiberglass, slight yellow whole pool stain/coating
Did you add any sequestering agent after putting in the stain treatment? You say that it is not a metal stain, but ascorbic acid removes metal stains - metal out is a sequestering agent, not a stain remover. Chlorine will remove organic stains only. The other thing is you should not shock the pool for at least 2 weeks after a stain treatment. You have to bring your chlorine up to the low end of your chart (the best guess chart sticky in the chlorine forum), starting 48 hours after the the treatment. You can put a maintainence dose of algaecide in since you have already put it in the water before you left on your trip. I like to use bleach and raise the chlorine slowly - you can also put a chlorine puck in the skimmer basket if you have a sand or DE filter. Keep your fliter running 24/7. You don't have to let your chlorine drop to 0 for 48 hours before the treatment. Just let it drop down to 1 or 2ppms. It will not hurt the ascorbic acid, it will just use up some of it faster. But just make sure you put the pump on circulate for about an hour or two or until all of the stain is lifted off and make sure there is enough sequestereing agent in the water. There are no stupid questions
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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