Pool is online and functioning, water is clear after replacing the filter manifold. I now need to remove the vinyl liner stains. Vitamin C works great against the stains directly, I now want to use ascorbic acid to treat the entire pool, walls, etc... Is there a link to detailed instructions? I have seen links to generic ascorbic acid, is that recommended? Also, I have read it needs to be used in conjunction with PolyQuat 60. If these instructions are written out somewhere, please point me to that link. Thank you.

Filter is DE, Vinyl, approximately 42K Gallons.

Thanks in advance.