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is there any benefit to using both chlorine and chlorine-free shock at the same time? is it bad to use them both at the same time? this forum is great. glad i found it. thanks!

i have read that cyanuric acid is heavier than water so when you do a partial drain and refill to lower the levels you should: 1. turn off pump for a couple days 2. cyanuric acid will settle to bottom 3. partial drain from bottom of pool 4. refill i have also read that you should drain from the...