Stain is approx 1/4 around pool. Have had it for 2 yrs. This year it is getting darker. Have tried liq chlorine on rag, magic eraser, plain cotton rag. Get very little off. Tried vit C in sock and did nothing. Water is clear and balanced. Thoughts?
Any rough guess as to how much bleach? You say not to add pucks or powder shock. Is that just until we get to the levels we needs to be? Thank you so much for your help.
Just opened pool Monday. No chlorine dectected 1 day after shocking. We had phosphate issue last year, 300 ppm or so. Phosfree added and water was fine rest of year. Water was balanced yesterday a.m. and we added stabilizer. Now no chlorine detected. With current situation can't have water...