Do anything special after swimmers?

[suziequsie2945]

Do you do anything additional or special after swimmers, particularly regarding chlorine if levels seem ok? (This may be a dumb question but searched everywhere for answer and couldn't find it.). Tested FC this morning and was 4. Then tested about 2 hours after swimmers and it was 3, where it normally is at that time every day. Therefore, seems we hardly lost any due to swimmers. Had hubby raise to 5 but wondering if we should add more since we had swimmers. We use strictly liquid chlorine, no tabs.

FC 3 last time checked but in process of raising to 5
PH 7.5
CYA 40
TA 90/100

 

[woodyp]

You're good to go if you checked fine afterwards.

 

[Richard320]

Pick up the wet towels....

 

[mynewpool]

If you only lost 1 PPM I would say you are fine. Just bring it back up to the correct level and you are good to go. Usually if I am going to have swimmers I will bump it up 2-3 PPM about 30 minutes before.

 

[JamesW]

I would check the CC (combined chlorine) level and increase the FC, if necessary.

 

[chem geek]

Roughly speaking, the chlorine demand from bathers in a pool will be around 1 ppm FC in 1000 gallons for every person-hour. So for your 25,000 gallon pool it would take 25 person-hours to see 1 ppm FC of chlorine demand. That's why you normally don't notice it. Of course, if someone urinates, that's different. Even so, it would take 4 cups of urine in your 25,000 gallon pool to create a chlorine demand of 1 ppm.

 

[suziequsie2945]

Thanks! All great info