My pool builder is recommending 200 for CH but Pool Math indicates 250-300 or more. What should CH range be to not damage the stone or grout and tile? Reread the info about CSI and attempting to follow all details.
Maintaining with TFP liquid chlorine (Kem-Tek from Lowes)
We are now experiencing water temps of 82-85 degrees. Chlorine is 3-6, Ph steady 7.3 - 7.5, CH at 150 and slowly adding to get to the 200. CYA has been around 35-45.
Very high winds for several days so I neglected checking and allowed Cl to get to zero. Algae was hard to see and wrobgly assumed our new Dolphin S200 would clean all walls and floor- except the steps.
Maintaining with TFP liquid chlorine (Kem-Tek from Lowes)
We are now experiencing water temps of 82-85 degrees. Chlorine is 3-6, Ph steady 7.3 - 7.5, CH at 150 and slowly adding to get to the 200. CYA has been around 35-45.
Very high winds for several days so I neglected checking and allowed Cl to get to zero. Algae was hard to see and wrobgly assumed our new Dolphin S200 would clean all walls and floor- except the steps.