# Thread: Invited my friend's kids to swim with my kids, and then.....

2. ## Re: Invited my friend's kids to swim with my kids, and then.....

Sounds like your friend needs to read the Pool School and ABCs of water chemistry pages. Either way, he needs to do it on his own. As for the chlorine, if the 4000 gallon pool is full, and he dumped a gallon of regular 8.25% bleach in there, the Poolmath calculator shows it would go up to about 21 FC. Depending upon the CYA (stabilizer) level, that number may go down quite fast as well due to the sun. Not much else you can do at this point other than to say, "I told you to go to TFP."

Have a nice day.

3. ## Re: Invited my friend's kids to swim with my kids, and then.....

4000 gallon, but it is only filled just past half full for now because its too deep for his 3 year old. And it was 10% bleach

4. ## Re: Invited my friend's kids to swim with my kids, and then.....

Ooh, then that changed it to right about 50 FC on my calculation based on 2K. Do you know if they put any stabilizer or conditioner in the water?

5. ## Re: Invited my friend's kids to swim with my kids, and then.....

Are you sure they weren't using the pool to pre-soak 10 laundry load of whites?

6. ## Re: Invited my friend's kids to swim with my kids, and then.....

I'd be surprised if that doesn't bleach out his liner. I did a SLAM on mine and the liner ended up being noticeably lighter. My FC never got any where near that high.

7. ## Re: Invited my friend's kids to swim with my kids, and then.....

Sa it was 8.2 % one...OK, 40ppm...with no CYA (hopefully) it can go down to almost none in two sunny days.
And...he still needs to fill another 2K gallons.
No reason to panic.

8. ## Re: Invited my friend's kids to swim with my kids, and then.....

He wont be adding any more water because of the height of his 3 year old, not this season at least. There is some stabilizer in there and i told him to target about 40, but im not there to test for him so i cant see for myself where it actually is.

9. ## Re: Invited my friend's kids to swim with my kids, and then.....

Gee, if he wants a little swimming pond why didn'he buy an inflatable?

10. ## Re: Invited my friend's kids to swim with my kids, and then.....

Got down to the bottom of it this weekend, turns out my friend thought it was a 40K gallon rather than 4K gallon pool. Makes perfect sense now, as his calculations were at a 10x factor. I can say his pool hasnt had any algae

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