OK so now that i have drained and refilled my tub to get rid of cc and start new without any additives like spa marvel. My FC is not dropping much at all.
raised the FC last night after soak to 8ppm. 24 hours later it was about 3ppm. So dropped 5ppm
added 1.5 oz to bring it up to 6ppm
about 40 min later 3 of us soaked for 40-50min. checked the FC level and it was still 5 ppm.
Does that make sense? I thought you needed roughly 2 - 2.5 oz of 10.5% chlorine per person per hour. So should 3 of us for ~50 min not added enough waste to cause the FC level to drop more than 1 ppm?
I mean if it is only using that much, that is good, just going against what i thought i understood. I told my kids that after they use the hot tub throw in 2 oz chlorine per person. They don't know how to test and everything.
But based on what i'm seeing that would be way too much