I had a solar pool cover on the last four weeks and inadvertently kept the SWG running at 60%. I am ready to swim and tested yesterday and the FC is very high. I decided to go to Leslie's to get second opinion on the free chlorine. The free chlorine is very high at 25 and I need to get it down because we have a pool party on Thursday. I have the SWG turned off so it is not producing any chlorine. I don't think the FC will reduce all the way to 4.0 by Thursday by itself. I would like to chemically fix the high free chlorine.
Leslie's wanted me to buy their Chlorine reducer but after being part of this forum I balk and doubt whatever they tell me. What is the best/quickest way to reduce the free chlorine? The pool calculator does not tell me what and how much to use. Does anybody know how much I should use and are there any adverse effects I need to plan for?
FC = 24
PH = 7.5
TA = 80
CYA = 70