CT_ Posted March 24, 2021 Share Posted March 24, 2021 Why does dechlorinator lower oxygen in a tank? I've heard this a lot and I don't get why. I tried to look up the reaction between sodium thiosulfate and chlorine and I found two reactions depending on if its cl2 or chlorite: Na2S2O3 + Cl2 + H2O → S + 2HCl + Na2SO4 Na2S2O3 + 4HOCl + H2O -----> 2NaHSO4 + 4HCl Neither of these seem to consume any O2. Is there an downstream reaction with one of the products? Link to comment Share on other sites More sharing options...
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