Since I started with TFPC I have always had a CC of 0. The last few days the rain has been crazy. Yesterday I added a tiny extra acid because I knew the rain last night and today was going to be a lot.
Today I checked the levels. I had a pH of 7.4-7.5, FC of 4.5, CC of .5, and adding them together I get a TC of a 5.
The only thing I did different was added 36% HCl from work instead of store bought 31.45% MA. Could the chlorine in the HCl cause the .5 of CC? Or is something else screwing up?
- - - Updated - - -
Also I noticed that Pool Math has changed a while back and never knew why.
Notice after 12 it says "trade" what does that mean?