This year we've started having parties with 20+ people/kids. I've had the cl level at 4-6ppm and by the end of several hours (4-5) you can visually tell the water is dull, and upon testing chlorine is at 0-.5. I need to remedy this for tonight's pool party.
Tonight we will have again have 20-22 people.
Chlorine level is 4.5 with no CC's
water temp 94
If i plan for 4 hours of swimming it would be nice to know what type of chlorine loss I should experience.
Taking a WAG i'd say i should start with doubling it to 10PPM which is shock level for my pool with no CYA.
I realize having no CYA is the issue, and it is zero because i have a auto pool cover which is always on unless swiming , for the first year i ran 70 CYA and chlorine would stay high forever cause of no sunlight and no debris other than what swimmer's deposited. So i'm dealing with overuse for water conditions with these parties.
If i don't raise CYA, do i just have to raise it before and possibly due an addition of bleach mid party? I don't want to do that in the pool where people will see LOL. I could dilute in 5 gallon bucket and poor in pump hidden from view (with it off as it is higher than pool). Could stick hose in there as well, then in min or two turn pool pump back on.
What do ya'll think?