Re: Ascorbic Acid Treatment - MBAR's suggestion
You also can put some ph down in a sock, or crush up the vitamin c and put it in a sock and tie it to a pole and rub it on the bottom (I know it sounds ridiculous hee hee, but it works) I hate to see you spend the money on ascorbic acid if it isn't a metals stain, however if you have been keeping the pool at high chlorine levels and the stains did not go away, or lighten, it probably is metal stain. Sorry it took me so long to respond, but I was away. Good luck and let us know how it is going.
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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