Ascorbic acid alone doesn't solve anything; it simply *temporarily* re-dissolves the metals that caused the stains.
There's no way to answer that -- I have no idea what condition your pool is in.what do I do next?
Most likely, you need to gradually re-chlorinate (ascorbic acid destroys chlorine and vice versa), brace yourself for the probably reappearance of your stains, get a K2006 test kit, find out what your water condition REALLY is, read through the metal treatment sticky-s here, make a plan to actually remove the metals from your pool, . . . and then start over.
But, I don't know that. And, you may get lucky -- people sometimes do, in stain removal.
I'll move this thread to the metals section; I recommend that you read the sticky-s in that section before deciding what to do next: http://www.poolforum.com/pf2/forumdisplay.php?139
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