PoolDoc,

thanks for the info. From your post, should I assume sodium percarbonate will not have the off-gassing effect? I reviewed the procedures in the link - will there be anything to vacuum to waste? With the chlorine steps the instructions included vacuuming the bottom of the pool to waste. Will the sodium percarbonate clean the filter and the pipes?

Any side effects I should be aware of?

Thanks again.

Regards,

C. Chase