It has taken me a while to get back to this as I've been travelling, had to order the acid, etc. but I'm now ready to do the acid treatment. Good news is the stains haven't gotten worse. I have a couple of questions before I start.

First, I assume the metal, stain and scale out product I tried first is a stain remover, not a sequestering agent. Is that correct? If so, do I need to get jack's magic or sequasol as was descrbed earlier in this thread? If not, is what I added still active in the water or would I need to add more. (BTW, I have backwashed since I added it).

Second, the chlorine is low enough for the treatment but I have a SWG. Should I turn it completely off for the first 48 hours then back on (how high?)

Third, how long do you have to wait before you can swim?

Thanks.