Average FC use in Hot Tub

[Geargoesdown]

I know it will very from tub to tub, but how much should the FC level drop in 24 hrs when NOT in use?

 

[YippeeSkippy]

Chlorine in a hot tub is a consumable item just as it is in a pool. Heat and even the ozonator will break down chlorine. In my tub I expect at least 1ppm loss in a clean tub, unused with the cover on.

Maddie