What do I have to do if I left the floater too long and now the chlorine is high?
You probably will just wait for the chlorine to come down to an acceptable re-entry point. The time it takes will depend on the level that you have present. If you are in a real hurry, you can use chlorine neutralizer (sodium thiosulfate) to reduce the chlorine, but this may present its own problems. Best to wait it out if you can.
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