MarylandCrabbing Posted November 8, 2015 Report Share Posted November 8, 2015 Hi! Rather a newbie of less than one year with a hot tub. Was told by the dealer each week I needed to add the multi shock. I'm not sure why, the ph, chlorine levels are normal and after draining and changing the filters after six months and trying for two weeks no shock treatment, I have a pleasant smell and no bad side effects of any ski infections or other issues. I'd appreciate any rationale for its use. I was asked to buy many chemicals, but seem to use just a few. Jacki Quote Link to comment Share on other sites More sharing options...
chem geek Posted November 8, 2015 Report Share Posted November 8, 2015 If you properly maintain your spa consistently with sufficient disinfectant/oxidizer, then you should not need additional products such as multi-shock, clarifiers, enzymes, etc. However, if you used other methods. Quote Link to comment Share on other sites More sharing options...
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