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Thread: What to do first in terms of balancing water chemistry?

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    What to do first in terms of balancing water chemistry?

    Just came from unnamed pool store. Short story they made it sound urgent I purchase and start dumping chemicals in a fast as I could. I do have the test kit you all recommend here, and I am getting used to doing the basic tests. The more complex ones not so sure. Here's what pool store reported. I am checking ph and chlorine daily. I put information about my pool in my signature. Taking over pool care from someone (unspecified) that does not want to take the time. Pool store want me to dump 9 lbs. 8 oz. of Alkalinity Up, and add 2 qt. 18 fl. oz. of Phosfree directly into skimmer. I entered all this into pool calculator, but not sure what order to add and how long to wait before adding something else. Any advice would be greatly appreciated. Taking baby steps right now.

    FAC 2.0
    TAC 2.0
    Salt 3100
    CH 200
    CYA 40
    TA 60
    ph 7.8
    Acid Demand 2
    Copper 0
    Iron 0
    Pho 1000
    Temp 86
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

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    linen's Avatar
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    Re: What to do first in terms of balancing water chemistry?

    Post your test results (not the pool stores) and we will start from there!
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

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    Re: What to do first in terms of balancing water chemistry?

    Honestly, your numbers look pretty good.

    I would rely on the input and advice from this forum MUCH MORE than a pool store. A pool store will always have alterior motives (sales), but the TFP community only wants to help.

    Now, based on those numbers, you could raise alkalinity a little bit (into the 70-90 range). Also, you should get a little bit more chlorine in the pool (and try to maintain a FC level of 5)

    How does your water look?

    EDIT: I agree with the above comment. Didn't realize those were the store's test results. Definitely test the water yourself before adding or changing anything.

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    Re: What to do first in terms of balancing water chemistry?

    Wow you guys are quick! Thanks. Yes I intend to use my own test kit. Oh, and the pool water is beautiful. My main concern is there is a slight yellow greenish color on the sides of the pool. I have brushed and brushed etc. It does not move. It does not feel slimy. Also there is a definite water line which I think might be calcium or scale. Or are they the same? So besides wanting the water pretty and clean, I want to get rid of the staining (algae?) and the scale. My test results this morning ph 7.6 and chlorine 3. I am going to reread the directions for the test kit tonight and try another test or two. Oh, and I failed chemistry.
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

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    Re: What to do first in terms of balancing water chemistry?

    Quote Originally Posted by Taylor1584
    My main concern is there is a slight yellow greenish color on the sides of the pool. I have brushed and brushed etc. It does not move. It does not feel slimy.
    Is it spots or a consistent shade on the whole wall? To test for a metal stain, crush up vitamin C tablets (like 20 of them) and put them in a sock. Hold the sock against the stained area for 1-2 minutes and see if the stain gets lighter. If it does, then you have a metal stain. If it is organic, then shocking the pool should clear it up.

    Quote Originally Posted by Taylor1584
    Also there is a definite water line which I think might be calcium or scale. Or are they the same?
    Yes scale and calcium scale are the same thing.

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    Re: What to do first in terms of balancing water chemistry?

    Thanks, will put vitamin C on my grocery list for tomorrow. I forgot to *** that we are on a well in our housing neighborhood. We had terrible staining of clothes and the water tank of the toilets. The iron, manganese, are very high, so we have a whole house filter with additional filter for the iron and manganese. Our pool water is not filtered.

    The discoloration is a general shading of the plaster, sometimes I see some green along the grout lines that I can scrub away although scrubbing the sides does nothing. More test results tomorrow morning.
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

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    Re: What to do first in terms of balancing water chemistry?

    Oh one more thing, full sun, no shade whatsoever. And it's hot here in Houston.
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

  8. Back To Top    #8

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    Re: What to do first in terms of balancing water chemistry?

    Ok, here goes, took an hour, wasn't as difficult as I thought. I am using the 1000 aquacheck kit, that I saw recommended here. Bought through here also. How's it look. I know I need to do things but what order, how fast, pump running or not? So many questions, thanks for putting up with a novice.

    Pool Store results from
    the other day from today 12-05-12

    FAC 2.0 FAC 3 ppm CC
    TAC 2.0 TAC 3.5
    Salt 3100 Salt 2920 (aquacheck test strip) 2600 pool equipment readout
    CH 200 CH 400
    CYA 40 CYA 30 if I visually est. more like28
    TA 60 TA 90 the 8th drop went green to almost pink, the 9th drop vivid pink
    ph 7.8 ph 8.2
    Acid Demand 2
    Copper 0
    Iron 0
    Pho 1000
    Temp 86
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

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    Re: What to do first in terms of balancing water chemistry?

    Oh dear that last post came out awful. Are you able to make out that the first data is from the pool store yesterday and the second data is from this past hour? I spaced it but it didn't transfer. I would take a picture but cannot figure out how to get pictures into the posts. I have searched the forum and can't find it. Probably directions are right in front of me. Thanks.
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

  10. Back To Top    #10

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    Re: What to do first in terms of balancing water chemistry?

    Is this better?

    PoolStore 12/5/22
    12/4/22
    FAC 2 3
    TAC 2 3.5
    Salt 3100 2920test strip/2600readout on pool equip
    CH 200 400
    CYA 40 28
    TA 60 90
    ph 7.8 8.2
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

  11. Back To Top    #11

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    Re: What to do first in terms of balancing water chemistry?

    As per Pool Calculator, I am to do the following. My pump turns on shortly and I will start with the acid to bring down the ph. I will let that mix awhile and then proceed, not sure what comes next. Any advice?

    So I am to add
    71 oz of bleach
    46 oz of muriatic acid
    365 oz of liquid stabilizer
    and CSI is a little high, not sure what to do about that.
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

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    Re: What to do first in terms of balancing water chemistry?

    Quote Originally Posted by Taylor1584
    365 oz of liquid stabilizer
    What is your target CYA? That number could, indeed, be correct...I just want to be sure! Especially since adding CYA is not something that can be easily reversed!

  13. Back To Top    #13

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    Re: What to do first in terms of balancing water chemistry?

    [quote]What is your target CYA? That number could, indeed, be correct...I just want to be sure! Especially since adding CYA is not something that can be easily reversed!

    According to the Pool Calculator it should be 70-90, I am at 28-30. I guess I should target 50-60, so I don't overshoot. I did add the acid for the ph, when do I add the bleach, before or after the CYA corrections?
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

  14. Back To Top    #14

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    Re: What to do first in terms of balancing water chemistry?

    Yes, I would start small and move up slowly (for CYA). Since you are using liquid stabilizer, it will register on the test fairly quickly (same day). I don't think it matters if you add bleach or CYA first, but if it were me, I would do CYA first so I get the most out of my new bleach.

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    Re: What to do first in terms of balancing water chemistry?

    Quote Originally Posted by blakej
    Yes, I would start small and move up slowly (for CYA). Since you are using liquid stabilizer, it will register on the test fairly quickly (same day). I don't think it matters if you add bleach or CYA first, but if it were me, I would do CYA first so I get the most out of my new bleach.

    Hey Blake, Thanks for the advice, going to buy the liquid just to get going. I am going to repeat the CYA test before adding, just to be sure.
    17,000 gal., 3 waterfalls
    Cartridge Filter, SWG
    IG
    Plaster
    1 1/2 H.P.

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