DougA Posted April 15, 2021 Report Share Posted April 15, 2021 I've seen several folks post about not being afraid to use too much bleach during a shock. What is the highest Free Chloine you would recommend in a shock to avoid damage to the tub? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted April 15, 2021 Report Share Posted April 15, 2021 Chemical damage occurs over time. Shocking to a high level is not what causes damage, it is maintaining a high level all the time. Quote Link to comment Share on other sites More sharing options...
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