Hey - there is a chemical called thiosulfate which neutralizes excess chlorine (it's the chem you add to the 25ml water sample when testing for TA with the 3 reagent test) It's a little costly, but I suppose that's better than having a bunch of sweaty, dirty people come in and use the spa to reduce the cl. Any chance of giving the spa a good dose of direst sunlight?
Hope this helps somewhat - if you have further questions - ask away![]()
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