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Thread: Noob water chemistry

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    Noob water chemistry

    Hi,
    I just hooked up my 350 gal hot tub and used the bromine the dealer gave me. My water readings are off and unwanted to make sure I add the right chemicals.

    1ppm FC
    1.5 Cc
    6.8 Ph
    35 alk
    20 CA

    I know I need to build up basically everything, no?

    So am I wrong to assume I need to add...

    More bromine? Or am I adding bleach to build up the FC?

    Mule 20 to build up the alk and ph?

    If I'm correct then is 3/4 vup the correct dose of both?

    I think im starting to regret not just doing the Dichlor/bleach method.

    Thanks in advance.

  2. Back To Top    #2
    Mod Squad tim5055's Avatar
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    Re: Noob water chemistry

    Welcome to TFP!!

    Your numbers look just a little suspect to me so I'll ask, what are you using for testing? make/model of the test kit.

    Bromine and Chlorine are different sanaitizers Generally you choose one or theother to maintain your tub. I would suggest reading through these threads:

    How do I use Bromine in my spa (or pool)?

    How do I use Chlorine in my Spa (or pool)?

    Do you also have a pool or is the spa all you have? I only ask because if you have both, then maintaining the spa the same as the pool helps ease confusion. I use the dichlor/bleach method only because a few times a year I can just dump the tub into the pool and start over fresh.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Mod Squad pooldv's Avatar
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    Re: Noob water chemistry

    Welcome to TFP. Congrats on the new tub. I am a fan of the dichlor then bleach because I use bleach in my pool too so there is always some around. You can drain the tub and start over with dichlor then bleach anytime you want.

    If those results are from a test strip or pool store then they don't mean a lot. Neither of those sources provide reliable test results and the pool store is always happy to sell you something you don't need. We recommend the Taylor K-2006 (not 2005) or the TF100. I use the TF100 from TFTestkits.net and have for many years.

    When you do get ready to make adjustments to your water chemistry here is a nice summary of chemicals, what they are, what they do and how to use them. Pool School - Recommended Pool Chemicals
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    Re: Noob water chemistry

    I'm using a Taylor 2006 test kit. I had a pool two years ago and ran it successfully with bbb. This bromine is all new to me which is why I feel like draining and refilling. Forgot to mention, I have an ozonator on my tub.

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    Mod Squad tim5055's Avatar
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    Re: Noob water chemistry

    Quote Originally Posted by petepuma1 View Post
    I'm using a Taylor 2006 test kit. I had a pool two years ago and ran it successfully with bbb. This bromine is all new to me which is why I feel like draining and refilling. Forgot to mention, I have an ozonator on my tub.
    I won't go into the ozonator now. I had one on my last tub and never really saw a difference.

    In the grand scheme of things dumping a few hundred gallons of water and starting back with what you are comfortable with is not the end of the world.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Noob water chemistry

    Thanks everyone.

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