Hey all, now that I have trouble free water, I want to start working on my staining. Kim and I started diagnosing this in my original thread which was geared toward my swamp, but now that my water is clear I would prefer to have a separate discussion geared to this.
So this is what my pool looks like:
Kim had me try the vitamin C test and here are my results:
The first is before. The second is after. It looks like the vitamin C ate through the center a little on the second pic. I tried a trichlor tab and no change.
Also a couple weeks ago I tried the vitamin C test but actually rubbed the tab onto the stain:
Thinking the white was just the powder from the pill being sanded down, I didn't really count that as anything but 2 weeks later it is still white... I would think the powder would have dissolved by now if the white was just vitamin residue.
So my thoughts and Kim's thoughts are it is worth a try to do an ascorbic acid treatment, so I went out and got 4 pounds, a sequesterant (Metal Free from Leslie's), and a 4.0 CULator. I haven't used them yet because my FC is still high from SLAM, but I thought I would try some of the ascorbic acid in a sock on the stain in the meantime... well that provided no change.
Thinking maybe acid wash, I tried a little in a PVC pipe right on one of the deeper stains, but that had no effect other than some faint black streaking down to the drain.
I had a plaster guy out here today and he said there is nothing that can be done short of replastering (of course he would say that) but I am starting to wonder if that is indeed true.
He also mentioned that the pool is supposed to be the grey color, not the beige or white.
I believe the plaster is close to 20 years old but other than this appears to be in good shape. Because of the age a local acid wash guy said he would not acid wash it.