Accidentally swimming at very high FC levels

Levy2725

Member
Jun 17, 2019
8
Bristol, Vermont
We have a chlorine tank with an automated pump that runs on a timer. This afternoon, my son accidentally knocked the plug out and plugged it back into a regular socket instead of the one linked to the timer. Basically, the chlorine pump was running continuously for about five hours.

I didn't realize what had happened until AFTER my daughter and a friend had just spent an hour in the pool. As we were getting out, I heard the chlorine pump running, wondered why it was running at a non-scheduled time and figured out what happened.

Just tested the levels — CYA:20, FC: 23.

We had her and her friend both rinse off in the shower immediately and so far they don't seem to be having any other issues from the chlorine exposure. Anything else we should be worried about or watching for on that front?
In terms of getting the chlorine back down to a swimmable level, nothing to do but keep the cover off when the sun is on the pool and wait, right? Pool Math app says the target chlorine for that CYA level is 3-5 ppm. Do we need to wait until the levels are below 5 ppm to get back in the pool? Would adding CYA to get that level back up to 40 help at all?

Any guidance on the exposure for the girls or remediation of the high levels would be much appreciated. Thanks so much!
 
Likely no adverse effects. Good to rinse off. Might lighten the color of their swimclothes.
SLAM for a CYA of 20 is 8 ppm. So you are definitely safe under that. Adding a touch of CYA is a good idea. Hard to test a level of 20 ppm.
 
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