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    Lowering TA without hours :)

    Water comes out of my hose at a TA of 230-250 so I do a significant amount of lowering each time I drain and refill my hot tub. It usually takes ~16 oz of muriatic acid to bring it down to the 50-60 range. To begin with I add 2oz at a time and recheck pH after 5 minutes. Uniformly the pH will...
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    What is this baffle/plastic plate attached to my ladder?

    That is to keep an automatic pool cleaner like a Polaris from getting stuck behind the ladder. At least that's what the previous owner of my pool told me when she was showing me around.
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    Bleach & Borax?

    8.25% is fine as long as it is unscented plain bleach.
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    Insurance inspection?

    OK, good timing on the inspection then since the water level is on the high side right now!
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    How long does it take???

    Beautiful pool!
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    first time test with TF-100

    If you are concerned about your son's immune system, keeping an adequate FC level is key. Using liquid chlorine to maintain FC has the added benefit of not affecting your pool's chemistry in other ways such as lowering the pH or increasing the CYA, which will cause problems down the road by...
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    Insurance inspection?

    I couldn't find a sub-forum appropriate for this topic, but if the mods think this goes better somewhere else please feel free to move it! We just closed on our new house with the pool in my signature. Apparently our insurance agent had a bit of a tough time finding a company that would...
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    Extended backwashing...harmful?

    Thanks for the explanation Jason! You guys do great work here.
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    Extended backwashing...harmful?

    I'm so glad I found TFP! I just took ownership of the pool in my signature when we closed on our new house a week ago. I had been reading Pool School and the forums here for a few months before closing, and I think I have a pretty good grasp on the chemistry and what I need to do to maintain my...