Regarding the salt chlorine system there is a minimum flow amount that must go thru the unit to generate chlorine. I have a Pentair IC-40 and I think it requires around 1300 rpms from my variable speed pump to flow enough water to make the proper amount of chlorine. I have my pump running most of the time at 1750rpm with a couple of hours at 2750rpm and it puts out plenty of chlorine for my 40,000 gallon pool.
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