The topic is Calcium Hardness. My current CH level in my inground fiberglass pool with a SWG is 180. I raised it to 180 after conflicting recommendations from several sources that resulted in my decision to keep it above 150 by maintaining a 180 level. All other measurements are at TFP's recommended levels as stated in TFP's Water Balance for SWG. I decided to raise my CH level to the recommended 250. When making a final check to ensure I would do it right, I came across TFP's chart titled (just) Recommend Levels where the recommended CH level is 220-320. I checked TFP's ABC's Of Pool Water Chemistry and found the comment regarding CH that stated "fiberglass pools probably need none." On top of all this, I have really ignored my CH level for the last two years (ran between 140-160). I am "pleasently" confused!
Question: What is the proper level for CH in a SWG fiberglass pool?
Explanation: I have followed TFP's advice and I have the near perfect pool. I have dropped from adding 5 supplements to my pool weekly to adding only one (and could do without this one also). My seach for the proper CH level is "to get it ALL right.
Thank you TFP.