Maxemily Posted July 22, 2009 Report Share Posted July 22, 2009 Does anyone know if cranking up the FC will break down biofilms? And if so, to what level of FC is necessary? Quote Link to comment Share on other sites More sharing options...
chem geek Posted July 22, 2009 Report Share Posted July 22, 2009 Does anyone know if cranking up the FC will break down biofilms? And if so, to what level of FC is necessary? The answer depends on how well-established and built-up they are. The key is to maintain an appropriate Free Chlorine (FC) level relative to the Cyanuric Acid (CYA) level so that the bacteria are killed before they can build up substantial biofilms in the first place. A heavy decontamination procedure that gets to 100 ppm will usually remove most biofilms, but if you suspect something specifically then you could use Spa System Flush to more specifically remove the biofilms. Why are you asking the question? Quote Link to comment Share on other sites More sharing options...
Maxemily Posted July 23, 2009 Author Report Share Posted July 23, 2009 No personal hot tub reason other than I am going to change the water soon and thought I might shock the hell out of it, wait till the FC level won't kill the lawn, then drain and fill. You know, just in case. Quote Link to comment Share on other sites More sharing options...
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