Am I missing something or is there a mistake one one of these?
In pool Math for a SWG pool, it recommends a target of 9 with a CYA of 60.
On the Pool School - Chlorine / CYA Chart it recommends a target of 4 with CYA of 60.
In pool Math for a SWG pool, it recommends a target of 9 with a CYA of 60.
On the Pool School - Chlorine / CYA Chart it recommends a target of 4 with CYA of 60.