<<Many cities, including my own, use CC instead of FC for chlorination because it lasts longer in the pipes so when added to the pool this uses up some of the FC although it should be proportional to the amount of fill water added each day. You might want to test your fill water for CC just to see.>> I pulled this comment off: ugh-pass-the-pop-t58914.html
I am having a hard time getting any measurable increase in chlorine even with the addition of enough dichlor to raise it to 3.0. New pool, plastered Wed, finished filling Fri morning.
Tap water FC: .5 CC: 1.5 I assume this means the city is treating with monochloramine. I also think I understand that getting rid of the monochloramine is taking a larger chlorine demand? Is there a table/ ratio that tells me how much chlorine it will take to wipe out the monochlorine? With the new plaster I'm hesitant to add more than needed.