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Thread: New here and ready to cancel chemical service

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    New here and ready to cancel chemical service

    Hi all,

    Thanks to this site I've learned a lot and I'm ready to cancel our weekly chemical service. We need to save $ plus I now have the time to take care of it myself. He typically dumps a canister of chlorine (gas?) and some white powder in during his short visit. I plan to see him once more next week to say thanks and see if he has any tips for me.

    Here's the first numbers from my new TF-100 kit.

    PH 7.2
    FC 7
    CC 0
    CH 1200
    TA 70
    CYA 40

    A few days ago I deep cleaned the sand filter and couldn't believe what came out of there. I haven't bought any chemicals yet but it sounds like a trip to Walmart for bleach is a good start.

    Thanks,
    David
    Pool - IG Oval 15500 gallon gunite/plaster built 1977
    Single speed ?HP pump, Triton II TR-60 sand filter
    TF-100 Test Kit just purchased

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    Divin Dave's Avatar
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    Re: New here and ready to cancel chemical service

    Hi Desertdog,
    Welcome to TFP!

    You've done the right thing by getting your own test kit. Thats the first step.

    By the numbers you posted, you don't need any more chemicals.

    your CH measurement of 1200 is high man.. way high. Any chance it would be testing error? Maybe test it again?

    I would recommend you also test your Tap water for CH and see what it is.
    Divin Dave,
    IG Vinyl, 15' x 30', 3 1/2' - 6' deep, Oval, ~15K gal, Intelliclor IC40, Intelliflo VS pump, Clean and Clear 420 Filter, auto-fill-disabled, Retrofit LED Color Light, Dolphin Nautilus Robot, TF100 Test Kit, Taylor K1766 Salt Test Kit, Tftestkit Pressure Gauge.
    www.tftestkits.net Experience- it's what's learned just after you needed it most !!

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    Texas Splash's Avatar
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    Re: New here and ready to cancel chemical service

    Welcome to the site. Oh boy, something tells me that between Tucson's hard water and all the junk added in the past from the pool service, that 1200 reading might be close. Experimenting in the Poolmath Calculator, I can see your CSI is right on the outside (high) end. Still you're hanging in there. It's amazing how much a difference even a new TA of 60 versus 70 does for your CSI reading. If you confirm that your CH testing was accurate, definitely use the calculator (very) often to watch pH and TA very closely as they are your last line of defense against that high CH.

    In any case, David .... welcome to TFP. You've done well so far. Glad to have you aboard.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Mod Squad pooldv's Avatar
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    Re: New here and ready to cancel chemical service

    Welcome to TFP! Nice work so far!
    TFP Moderator
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    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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    Re: New here and ready to cancel chemical service

    I would just add that usually you just need to use a 10ml sample for FC/CC and then multiple by 0.5. That CH? Yikes!
    Last edited by MarianParoo; 03-10-2016 at 11:13 PM. Reason: Brain dead... And too many beers

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    Re: New here and ready to cancel chemical service

    Thanks guys, I'll be re-checking the CH this weekend.
    Pool - IG Oval 15500 gallon gunite/plaster built 1977
    Single speed ?HP pump, Triton II TR-60 sand filter
    TF-100 Test Kit just purchased

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    Richard320's Avatar
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    Re: New here and ready to cancel chemical service

    Quote Originally Posted by Desertdog View Post
    Thanks guys, I'll be re-checking the CH this weekend.
    If you don;t have a speedstir, get one. It makes a huge difference in the CH test when you have to mix that many drops. My CH reading dropped 200 points when I switched to the speedstir. TFTestkits.net
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: New here and ready to cancel chemical service

    I've seen my CH readings that high and higher. You can't just drink Tucson water, it's got to be chewed. It only takes a couple years to get to those levels, then it's drain and start over (with CH only in the 600-800 range).
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    DaninFLA's Avatar
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    Re: New here and ready to cancel chemical service

    CH isnt surprising. hard water plus high temps and low humidity mean lots of evaporation and refills. good combination to get your CH rising really fast. manageable, just keep an eye on the CSI ratio in pool math to make sure you dont start to precipitate.
    Dan
    9,000 gallon in-ground Saltwater pool, plaster, cartridge filer, 1.0 hp pump, Hayward T-15 SWCG, TF-100
    Pool School - Chlorine / CYA Chart; Pool School - Test Kits Compared;

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    Patrick_B's Avatar
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    Re: New here and ready to cancel chemical service

    Agreed, the CH could easily be 1200, but it absolutely should be confirmed with a re test, and makeup water test. Almost two years in, I'm knocking on the 1000 PPM CH door. Not bad though considering I have 700 or so in my makeup.

    TFP Moderator
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    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

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    Re: New here and ready to cancel chemical service

    I'm taking the advice on the speedstir and will retest the CH when it comes. For now I thanked the pool man and cancelled the chem service. He dropped in a tank of chlorine and some sodium bicarb, said the bicarb made acid to keep ph low. That seems backwards to me. Isn't bicarb a base? I always assumed the powder he was adding was dry acid. Anyway I'll touch back with new test results in a few days. Thanks again.
    Pool - IG Oval 15500 gallon gunite/plaster built 1977
    Single speed ?HP pump, Triton II TR-60 sand filter
    TF-100 Test Kit just purchased

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    Texas Splash's Avatar
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    Re: New here and ready to cancel chemical service

    Typically, sodium bicarbonate is used mainly to raise TA. It has a small effect on pH, but mostly TA. From a previous post:
    Sodium hydrogen carbonate is a synonym for sodium bicarbonate and is the same thing as baking soda.
    Still, here is a very interesting article on its use during plaster start-up: The Bicarb Start-up and Why it Works
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  13. Back To Top    #13

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    Re: New here and ready to cancel chemical service

    Well you guys were right about the speedstir, CH tested at 1050 instead of 1200. A little help anyway.
    Pool - IG Oval 15500 gallon gunite/plaster built 1977
    Single speed ?HP pump, Triton II TR-60 sand filter
    TF-100 Test Kit just purchased

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    Texas Splash's Avatar
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    Re: New here and ready to cancel chemical service

    Every little bit helps. But you're right on the edge. Keep an eye on the pH and TA, making sure they remain low enough to counter-balance that high CH (and CSI level) in the Poolmath Calculator. The calculator is your most important tool at the moment. Make sure you update the temperature on that thing as well. It has a big effect on your CSI. Let us know if you have any questions. Good luck!
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
    If you enjoyed your TFP experience, please consider donating to Support TFP!

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    Patrick_B's Avatar
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    Re: New here and ready to cancel chemical service

    Quote Originally Posted by Desertdog View Post
    I'm taking the advice on the speedstir and will retest the CH when it comes. For now I thanked the pool man and cancelled the chem service. He dropped in a tank of chlorine and some sodium bicarb, said the bicarb made acid to keep ph low. That seems backwards to me. Isn't bicarb a base? I always assumed the powder he was adding was dry acid. Anyway I'll touch back with new test results in a few days. Thanks again.
    Hey Desertdog,

    If he said that about the BiCarb, it's a good thing you let him go. That's scary if he believes that, and carries around Gas Chlorine, but that's what I'm most curious about. You mean to say he left a Cylinder of Chlorine gas at your residence?

    And has he returned to retrieve it? Nothing wrong with Gas treatment at all, but that sounds pretty negligent. In all honesty it would be my first choice for a Chlorine source except for a host of handling issues and red tape hurdles. But wow that is amazing he would leave it like that.
    TFP Moderator
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    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
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  16. Back To Top    #16

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    Re: New here and ready to cancel chemical service

    Sorry if I mislead you Patrick, he emptied a canister of chlorine into the pool last week and some powder. He didn't leave anything. He may have just told me something about the powder to end the conversation. I had already told him I was cancelling. Good timing too I received a notice of rate increase the next day.

    Thanks again,
    DDog
    Pool - IG Oval 15500 gallon gunite/plaster built 1977
    Single speed ?HP pump, Triton II TR-60 sand filter
    TF-100 Test Kit just purchased

  17. Back To Top    #17

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    Re: New here and ready to cancel chemical service

    how long did it take the CH to get over 1000? IOW, do you know when the last time the pool was drained (if ever)?
    10,500 gal IG, Topaz Pebble, auto-level
    Hayward DE filter, 2HP Ecostar VSP, ProLogic PS-4, GVA actuators
    Cal Pools Wave Force Plus (wall return jets plus 2 floor pop-ups), Venturi Skimmer
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    Helen203's Avatar
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    Re: New here and ready to cancel chemical service

    Quote Originally Posted by desertdog View Post
    sorry if i mislead you patrick, he emptied a canister of chlorine into the pool last week and some powder. He didn't leave anything. He may have just told me something about the powder to end the conversation. I had already told him i was cancelling. Good timing too i received a notice of rate increase the next day.

    Thanks again,
    ddog
    haha -- perfect!!
    My Pool Build (2015): inground 12K gals gunite/plaster pool, SWG, 2-speed pump, cartridge filter, gas heater, and polaris cleaner (Jandy). TF-100 Test Kit w/ Speed Stir

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