Best way to increase CH?


Well-known member
May 29, 2017
Worcester, MA
So I've got my FC dialed in at last thanks to this site! Many Thanks!

Now, for the first time my CH has dipped a bit low. I'm currently at 325 with target for a Gunite Pool with SWG of 350-450

I'd like to increase it to 400 just to keep it in the middle.

I've seen Balance Pak 300 recommended or else calcium chloride. Is Balance Pak acceptable? Or does it contain more unwanted ingredients that I will regret?

Where can I get calcium chloride?