Stains returning

[gerri]

I used metal magic - while it wasn't exactly magical about taking off some tough old iron stains it did further lighten them - nothing so far has completely removed them though so it worked as well as Ascorbic Acid and better than Oxalic. One thing I do notice though is that I had little granules on the bottom after a couple of days. They were rust colored.. so possibly, and just maybe it did cause the iron I have to drop out of the water. I'm still seeing a bit of it each day and I'm cleaning it out each day. It looks like rust colored sand. It did take me a week to get my water clear again after the metal magic treatment, so I didn't post before now about results because I really couldn't tell about the stains. They are still there a bit, but lighter than ever. I think 1 more AA treatment may do the trick.

[gerri]

United sells the Oxalic Acid treatment, so that's what you have from the pool store. You need to drop your chlorine down to 0 and lower your Ph to 7 or 7.2 and then do the treatment, that way you will get the best results with it. Expect cloudy water and after 48 hours start bringing your Cl back in gradually. If the Oxalic doesn't work I would have to recommend the Ascorbic Acid treatment and preparation is the same for that treatment as well. Running high Cl will be making your stains stick better so lower it and stop running at shock levels, if the stains aren't organic (algae and such) then it won't take them off and you're making matters worse.

Good luck with it. Let us know how it goes with the United (Oxalic) treatment.