Susanj Posted August 15, 2023 Report Share Posted August 15, 2023 I’ve read that alkalinity and pH should not change that much and only need to be tested weekly. That’s not true of mine -it can be fine & I can go in alone for a half an hour and the next morning when I test ( with a drop kit) it’s way low. Is there something wrong that this indicates? Maybe it needs a change of water? It’s been 2 months. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted August 25, 2023 Report Share Posted August 25, 2023 On 8/15/2023 at 4:55 PM, Susanj said: read that alkalinity and pH should not change that much Where? Not in any spa information, certainly. Opening your air controls is all it takes. Everything you add will have a ph/alk effect as well, from sanitizer and shock to foam-gone. 1 Quote Link to comment Share on other sites More sharing options...
waterbear Posted August 28, 2023 Report Share Posted August 28, 2023 What is your current alkalinity and pH. Alkalinity will change with pH and aeration will cause pH to rise while keeping alkalinity constant. Quote Link to comment Share on other sites More sharing options...
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