When would be the best time to do a metals stain treatment?
1. before/after close or before/after open? or does it matter? (I was just thinking that the water temp will soon be cold enough to stop chems - 76 now)
2. If the plaster is only 7 mos. old (& the stains are younger than that) , would the sequestering agent do it alone? (w/o the ascorbic acid treatment?)
Also, is it possible that the staining can be caused by the new light fixture? It has some kind of metal cover and in the deep end where the staining is. Pool store found no iron in fill water.
Marie, we did the vitamin C, and yea, it is metals.