Pool party tomorrow - Chlorine level?

[First Pool Judith]

We're having our first larger pool party tomorrow. We're expecting about 20 adults. What should my chlorine level be?

Currently

FC: 5
CC: 0
PH 7.6
TA: 80
CH 350
CYA: 45

 

[chem geek]

(20 people) * (4 grams per person-hour) * (1000 mg/g) / (60567 liters) = 1.3 mg/L/hour so only if all 20 people were in the pool for several hours would you need to significantly elevate the chlorine level. I'd say if you raised it to 8 ppm you should be OK unless all 20 are going to stay in the pool for more than a couple of hours. Odds are only some will be in the pool at any given time. Of course, factor in your normal daily loss rate which is probably around 1.5 ppm FC (which excludes overnight loss). You can then just add more chlorine right after the party is over as needed.

This also assumes these adults don't pee in the pool.

 

[First Pool Judith]

Perfect - and you're right - there will probably only be a few people in at any given time. Thank you!!!

 

[duraleigh]

8 ppm would be a nice pre-party number. Test again shortly after pool party and adjust if necessary.