Can you swim while adding CYA?

If you had algae and were testing to see if your done with the SLAM, I would say to do an OCLT at SLAM level or close to it.
To just do an OCLT to confirm there is nothing consuming chlorine you can do that at normal FC levels or slightly higher. ?
 

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Next time get the powder and save a bunch of money. Put it in a sock and hang in front of a return.

Take care.
 
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