23000 Gallon printed Liner.
30' round 1.5HP 22"SandFilter.
Untreated this winter due to Gustav.
Finally got water clear and correct but had what I first thought was algae problem that
I could brush off but now has a faint stain in perimeter about 60-70% surface coverage.
Free Chlorine was at 1.2
PH was at 8.3
Pool guy said wait 3 days and if FC was <1.0 I could begin Ascorbic Acid treatment.
It worked a little. About 70% stain area was cleaned. 1 large patch and a couple of
streaks remained. I had used 2 bottles StainFree (1.75 lbs each) initially. I then waited
1 day while circulating and it didn't clear up. Instead of putting any Metal Free in I bought
2 more bottles of Stain Free - which helped a little more and then I added 1 bottle of MetalFree.
If the stain remains today - what should I do?
Last night FreeChlorine = <.5 & PH ~7.0 (I think)
I'm $200 into stain removal and it's still there. The only other time this happened (Katrina) the
Stainfree worked like magic....