TAB157 Posted November 7, 2014 Report Share Posted November 7, 2014 Are there any old posts that describe the use of 100% cyanuric acid in hot tub decontamination? I ask because I have a large quantity (12 lbs) of it, and bleach, but no dichlor, and I'd like to use it up. Thanks, Tom Quote Link to comment Share on other sites More sharing options...
Spanky Posted November 7, 2014 Report Share Posted November 7, 2014 You wouldn't use CYA for decontamination but you can certainly use it on a fresh fill to get to 30ppm and eliminate the Dichlor step. That's exactly what I use with SWCG (Chlormaker IL) The only issue is for an average spa, 12lbs will be more than 50 years supply!!! If you have a pool then you'll certainly use up the 12lbs but a spa will use less than 8 ounces / year Quote Link to comment Share on other sites More sharing options...
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