No combined chlorine

John Richards

New member
Sep 6, 2018
Overland Park

My PH is 7.2
Free Chlorine is 5.5
Combined Chlorine is 0.0
CH is 280
TA is 110

35,000 gallon pool.

I have shocked my pool twice. Once with Non chlorine shock 8 lbs and once with 8 gallons of 11 percent Chlorine.
I do not know what to do. Please help. Thanks

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Welcome! :wave: No combined chlorine is fine. CC is a residual product when free chlorine is processing organics from the water. We actually do not like to see it go over 0.5, so you're in good shape. Is there another concern? No algae I hope?

Don't forget to update your signature with all of your pool and equipment info so we know what you have there. Please include which test kit you have as well.


TFP Expert
LifeTime Supporter
Jan 6, 2010
San Dimas, CA (LA County)
If you want some CC, just go pee into the pool. But test for it soon after because sunlight eliminates a lot of it.

You're still dealing with algae because you haven't killed it all. Depending on your CYA level, you might not have killed any. This is a battle to the death.,What you're doing is hitting it and knocking it down and then letting it get back up. You can't do that. You must hit it again and again and kick it when it's down until it's all gone. We called this cage-match the SLAM Process There are full instructions in that article.

Here's an overview:
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