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    What happens to water that requires fresh fill periodically?

    Just curious. :shock: I know about the formula that calc's usage vs when to drain and re-fill but what actually happens to water quality if you don't fresh-fill your hot tub accordingly? If pools can go all season why not hot tubs - if balance and key numbers are maintained? Barry
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    How does MPS work as a shock

    As I understand it from this forum, MPS is not really effective in lowering cc once it's there as using Chlorine to reach a break point to effectively reduce the chloramine. recommended usages then: Use on a regular basis as a preventor. Use with indoor spas to reduce chlorine smell. But how...
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    CYA depletion through evaporation

    Quick question. I have to add ~ 4% of reclaim every other week due to evap. Can I expect the CYA level to drop accordingly? How about salt and calcium content? Barry
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    CH and salt content in spa when adding reclaim fill

    Are the calcium and salt ppm's reduced when bringing water level back up due to evaporation? Barry
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    Testing for chloramine count

    Have a Taylor K-2006 kit. After arriving at a FC count - Add 5 drops R-0003 to titrate using 0871 for CC. Question - is it normal to get the solution colorless at a point but then if left alone for 5-10 seconds the solution begins to turn pink or lighter shade of pink? Once it first turns...
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    BBB converter with a question

    Switched after finding this site. No complaints but have a question relating to getting the CC in line. Dichlor obviously is effective to stabilize when shocking but it adds to CYA which everyone here says is not good (once above 50). So I refilled 80% - 90% of a 365 gal capacity hot tub and...
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    What's the purpose of Thiosulfate?

    Taylor's requires 2 drops pf R-0007 before adding R-0008. Just wondering why and if one didn't add it, what would be the result? Does it help isolate the base factor better (truer reading) by canceling out other factors that make up Total Alkalinity? Thanks, Barry
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    Borate formula using ProTeam Gentle Spa

    I cannot find the thread where "Waterbear" I believe introduced this product to his spa. Have have PH drift and understand this is a buffer. Understand as well it is PH neutral. Questions that I have: Do borates affect Calcilum Hardness and about how much? Current hardness is 450 until I...