WendyLou Posted July 13, 2021 Report Share Posted July 13, 2021 Hi, I have just bought my first hot tub. My TA and Ph levels are reading fine, however, my MPS was low. I am using Aquablanc, I added the Aquablanc O2 Tablets (in floater) and Aquablanc Combination A liquid but instead of raising the level it is now on 0. Can you tell me what I am doing wrong, please. Many thanks Wendy Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted July 13, 2021 Report Share Posted July 13, 2021 3 hours ago, WendyLou said: Can you tell me what I am doing wrong, please. This. 3 hours ago, WendyLou said: am using Aquablanc, And this. 3 hours ago, WendyLou said: MPS I am no chemistry expert, but I gather that this is a silver/copper liquid and mps tablets. While I like ionized silver, I use it with chlorine and ozone. I do not consider it to be a primary sanitizer. I do not use or generally recommend mps. You are far more likely to have an adverse reaction to mps than to chlorine or the resulting byproducts (which ozone removes). Ozone is a strong oxidizer, and could burn off mps as well as chlorine and chloramines. Does your spa have ozone? Mps, or any other oxidizer, will destroy, and be destroyed by, organic contaminants in the water, so a heavy contaminant level will deplete mps, chlorine, bromine, even peroxide. No sanitizer (chlorine, bromine) and a lower mps level than is needed to oxidize the contaminants introduced by use can result in residual contaminants that, given a short while, will grow into a biofilm that is chemical resistant and provides a bacterial breeding ground which continues to deplete your sanitizer/oxidizer while never being completely destroyed by it. For more info, search the forum for "biofilm" or "ahhsome". Quote Link to comment Share on other sites More sharing options...
broberts Posted July 17, 2021 Report Share Posted July 17, 2021 I didn't think there was a way to measure MPS Am I missing something Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted July 17, 2021 Report Share Posted July 17, 2021 https://www.spadepot.com/AquaChek-Orange-MPS-3-in-1-Spa-Test-Strips-for-Mineral-Sanitizers-P876 Quote Link to comment Share on other sites More sharing options...
broberts Posted July 18, 2021 Report Share Posted July 18, 2021 Wow, I never saw them anywhere. Found a shop in London Ontario that has them. Amazon Canada does not. thanks order placed I put my first dose in today at 1/2 the rate on the bottle. The FC is up high near 7 or 8 and a few hours later the water is milky. It has been perfectly clear until this. Quote Link to comment Share on other sites More sharing options...
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