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Thread: Can I accomplish any of this with Dichlor

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    cfclay's Avatar
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    Can I accomplish any of this with Dichlor

    Just got my kit, drained my pool 64% of the very high cya water, and now have the following readings:
    FC:0
    PH: 7.9
    TA: 60
    CYA: 20

    I have list of things to add to water, can I accomplish any of this using my Dichlor granules I swore I'd never touch again?

    Only reason I ask is since I needed to raise CYA?




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    Re: Can I accomplish any of this with Dichlor

    Actually, I just looked at my iPhone app. Doesn't this answer my question that it would be okay to use just this once?



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    Re: Can I accomplish any of this with Dichlor

    If you look at the full site version of Pool Math, once you have your pool volume entered, look at the bottom of the page (below the chart)

    Effects of adding chemicals

    You can use the pull-down to select dichlor and it will tell you the effect a specific amount will have on your chemistry.
    chiefwej
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    Beens's Avatar
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    Re: Can I accomplish any of this with Dichlor

    The short answer is, Yes.

    Remember that TFP is not necessarily about *not* using some of the available products. We are all about knowing what they do and what they will add to the water.

    If you understand that the dichlor is going to add CYA along with FC (which it looks like you do) then all that is left is to calculate how much you can add to get closer to your goals.

    Like you found on your app and chief suggested in PoolMath...you can get an idea of what the dichlor will add and make your dosing decision based on that. Be careful and don't overshoot your CYA. What a pain to have to remove water again to fix that!

    Knowing what you're adding and how it affects your pool *is* the TFP way!
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    Melt In The Sun's Avatar
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    Re: Can I accomplish any of this with Dichlor

    Yep, that's a perfect use for dichlor...adding FC and CYA to fresh fills.
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    Re: Can I accomplish any of this with Dichlor

    yup. As long as you understand what happens, then you are in GREAT shape to take total control of your pool, and your pocketbook!
    Divin Dave,
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    Re: Can I accomplish any of this with Dichlor

    It will also lower the pH ... you have the perfect combination of needs.
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    Re: Can I accomplish any of this with Dichlor

    I was thinking the same thing with my new fill and was going to ask the same exact question

    you have to love the feedback and knowledge on this site...
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    Re: Can I accomplish any of this with Dichlor

    And unlike the pool store, pretty much everyone who replies all give about the same answer!


    Quote Originally Posted by cowboycasey View Post


    you have to love the feedback and knowledge on this site...
    Divin Dave,
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    Re: Can I accomplish any of this with Dichlor

    I didn't quiet have the effect I was hoping for.
    FC:0
    PH: 8.2
    TA: 90
    CYA: 30

    I added about 7 ounces of Dichlor with seemingly no effect.

    Any suggestions? 7 more ounces of the Dichlor?


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    Mod Squad jblizzle's Avatar
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    Re: Can I accomplish any of this with Dichlor

    Are you using PoolMath to calculate how much to add?
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    Re: Can I accomplish any of this with Dichlor

    Quote Originally Posted by cfclay View Post
    I didn't quiet have the effect I was hoping for.
    FC:0
    PH: 8.2
    TA: 90
    CYA: 30

    I added about 7 ounces of Dichlor with seemingly no effect.

    Any suggestions? 7 more ounces of the Dichlor?


    Sent from my iPhone using Tapatalk
    How the heck did the TA climb that much? The CYA should have only climbed by about 2, which is hard to detect n a test. The pH should have come down some. The FC not changing doesn;t surprise me - it is a consumable and you only added 3 ppm, which can disappear in a day no problem, even if there are no problems.

    I suspect some kind of testing error, or you've been adding some hard fill water.
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    Re: Can I accomplish any of this with Dichlor

    Quote Originally Posted by jblizzle View Post
    Are you using PoolMath to calculate how much to add?
    Sure, I had the picture in a previous post


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    Re: Can I accomplish any of this with Dichlor

    Quote Originally Posted by Richard320 View Post
    How the heck did the TA climb that much? The CYA should have only climbed by about 2, which is hard to detect n a test. The pH should have come down some. The FC not changing doesn;t surprise me - it is a consumable and you only added 3 ppm, which can disappear in a day no problem, even if there are no problems.

    I suspect some kind of testing error, or you've been adding some hard fill water.
    When you are testing for TA- do you count when you get the first hint of pink/red? If so, okay you could probably dial that back back to 70.


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    Re: Can I accomplish any of this with Dichlor

    7 oz of dichlor in 10k of water would only raise CL by 2.9 which could be consumed pretty quickly, but there is no way it would raise the CYA by 10, or raise (not lower) the pH and TA like that.

    There must be an error somewhere. Possible testing error?
    chiefwej
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    Re: Can I accomplish any of this with Dichlor

    I don't know guys maybe I have selective color vision issues. My wife thought the on the first test was 8.2 rather than 7.9.

    As far as the TA? Honestly it's probably the same- first sign of solid pink-60


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    Re: Can I accomplish any of this with Dichlor

    You are on the edge of getting some algae going in your pool. FC must stay above the minimum level for your cya at all times, Chlorine CYA Chart
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    Can I accomplish any of this with Dichlor

    Update:
    FC:0
    PH:7.5
    TA:80
    CYA:40
    Just for kicks I did calcium test, because I notice original homeowner had calcium increaser in garage: 75

    The pool is getting less green but not clear. Looks chalky light blue maybe. Has never had any chlorine reading though I had been adding Dichlor for 2 days, then switched to 8% bleach the last two days. I'm on day 4 of treating this drain and refill. The 25% that was left in the pool was pretty green.

    I never thought calcium was something to worry about in a vinyl pool.

    So do I add the recommended 286 oz of calcium increaser??


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    Re: Can I accomplish any of this with Dichlor

    You don't need to worry about Calcium in a vinyl pool.

    Odds are what happened was the previous owner went to the pool store for a free water test and they alerted him to his low CH and sold him a bunch. Ka-ching!
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    cfclay's Avatar
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    Re: Can I accomplish any of this with Dichlor

    So hopefully now the CYA is where it should be the chlorine will hold not burn off so rapidly and do more of its job ?


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