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I just visited the local pool store and was told my CH is too low (160ppm) and adding calcium will keep other chemicals from "wavering" too much. Specifically, the employee said my pH and alkalinity are more likely to "stay put" if the hardness is above 200ppm. Learning from past mistakes, I...

Hello- I opened my pool this year to a brown swamp with thick green algae on every surface. After tons of money and filtering and backwashing, the pool was a sparkling clear blue. We used: 2lbs green to clean, 19lbs of shock, and superfloc to get it clean. (13,000 gallon pool). After putting...

Hello- I need to replace my Hayward chlorinator. The chlorinator model number is cl200 but i thought it was an offline model based on its placement. Can anyone identify which chlorinator I should buy to replace it with the picutures in the link? Also, how do I remove the old chlorinator? Do I...