If you swam the next day- what was your chlorine level? Had you lowered to 0 prior to adding the ascorbic acid? How soon afterward do you begin adding chlorine?

I have a brown stain all over pool- I use well water to fill my pool that has high iron count. I have used both Stain Out and Metal Out. The stain goes away but is back with in a week. Any suggestions?

I am battling a high CYA (135) and am using Bleach about 174 ounces/day to maintain chlorine level between 7-10ppm Water is crystal clear.