- May 30, 2012
- 1,610
- Pool Size
- 17000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool Edge-40
What sort of shelf life do the CH chemicals have (10,11,12)? My 11 seems real thick and I have to squeeze really hard to get drops out. I added 60 drops of 12 before it barely turned light blue. I get a lot of evaporation (since my CYA goes to zero each year), I assumed that would drive CH down. Bad chemicals, or high CH?