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Thread: Water Balance Advice For My Situation

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    Water Balance Advice For My Situation

    Hi All,

    I've never posted about my water test results before, but the pH is starting to drift higher and the TA is drifting lower. I haven't used chlorine tabs in almost 3 weeks as I've been reducing chlorine and CYA levels ever since firing the pool man. All I've been using after an initial non-Cl shock 3 weeks ago has been 65% chlorine shock broadcast into my pool every other day to get the FC level to 2.0. I've also been adding 2 capfuls of Leslie's Perfect Weekly every Thursday. Can I please get some advice on how best to treat my water as pH goes up and TA goes down (seems kinda counterintuitive to me)? Let me know what additional information you need.

    5/17 Quick Results (today)
    FC = 2.0
    pH = 7.8
    TA = 60

    5/11 Full Results
    FC = 1.0
    pH = 7.4
    TA = 80
    CH = 230
    CYA = 58
    Phosphates = 100

    5/5 Full Results
    FC = 3.0
    pH = 7.4
    TA = 80
    CH = 240
    CYA = 90
    Phosphates = 300

    4/30 Full Results
    FC = 10.0
    pH = 7.5
    TA = 120
    CH = 200
    CYA = 80
    Phosphates = 400

    Thanks.
    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Mod Squad jblizzle's Avatar
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    Re: Water Balance Advice For My Situation

    Stop trying to keep the pH so low. Let it sit at 7.8 or so. With the lower ta the pH rise should slow down.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Re: Water Balance Advice For My Situation

    Quote Originally Posted by jblizzle View Post
    Stop trying to keep the pH so low. Let it sit at 7.8 or so. With the lower ta the pH rise should slow down.
    I haven't been doing anything to adjust the pH (or TA for that matter). So what you are suggesting is to keep doing nothing for now, correct?

    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Mod Squad jblizzle's Avatar
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    Re: Water Balance Advice For My Situation

    For the pH and TA, correct.

    But your chlorine maintenance leaves a lot to be desired. And the perfect weekly is pointless
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Mod Squad pooldv's Avatar
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    Re: Water Balance Advice For My Situation

    PH at 7.8 and TA at 60 is great.

    Chlorine level is set based on the CYA level and the Chlorine CYA Chart. Always keep it at target level. Letting FC drop below minimum leaves your pool unsanitary and algae will start to grow.
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    Re: Water Balance Advice For My Situation

    Quote Originally Posted by pooldv View Post

    Chlorine level is set based on the CYA level and the Chlorine CYA Chart. Always keep it at target level. Letting FC drop below minimum leaves your pool unsanitary and algae will start to grow.
    Agree. Do you have a test kit or are you going to pool store?
    I'd bet you my bikini you'll never get TFP water from a pool store!

    24' Sharkline Venture De Filter

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    Re: Water Balance Advice For My Situation

    Quote Originally Posted by Casey View Post
    Agree. Do you have a test kit or are you going to pool store?
    I have a Poolmaster 22260 Basic 5-way test kit that measures FC, pH, and TA. Until I get a better kit, I go to Leslie's to get CYA and Phosphates reading.

    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Re: Water Balance Advice For My Situation

    Quote Originally Posted by jblizzle View Post
    For the pH and TA, correct.

    But your chlorine maintenance leaves a lot to be desired. And the perfect weekly is pointless
    I'm getting a 15lb bucket of 3" chlorine tabs today. How many would you recommend I put in my floating chlorine dispenser? I do not have an automatic chlorinator.
    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Re: Water Balance Advice For My Situation

    Quote Originally Posted by pooldv View Post
    PH at 7.8 and TA at 60 is great.

    Chlorine level is set based on the CYA level and the Chlorine CYA Chart. Always keep it at target level. Letting FC drop below minimum leaves your pool unsanitary and algae will start to grow.
    Okay, I'm definitely learning something here. Forgive my newb-ish-ness. As I mentioned in my first post, I've only been adding chlorine via shock and have not had tabs in my pool for 3 weeks (I'm getting some today, though). Every other day, I have been testing the FC and using the Pool Pal app to bring the FC level in my 19K gal pool to 2.0 with 65% shock. For instance, the other day when my FC was 1.0, I added 4.0 oz of shock to achieve the Goal of FC=2.0. According to the Chlorine CYA Chart, "Shock FC" for CYA levels between 40-50 (where my pool is currently) is 16-20. Am I interpreting the table correctly that I should have my "Goal FC" set to 16.0-20.0 in my Pool Pal app and not 2.0 since I am only adding chlorine by way of shock? According to PoolCalculator, if I set my Goal FC to 18, this means I need to add 4.2 lbs of 65% shock to my pool. Is that correct?
    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Re: Water Balance Advice For My Situation

    Have you found pool school yet? TFP does not recommend the use of solid forms of chlorine (pucks/powders). All solid forms of chlorine add something else to the water too, usually CYA or CH. Liquid chlorine (aka liquid shock, aka bleach) or a saltwater generator are the preferred chlorinating methods.
    11,500 Gal Fiberglass IG Pool. Hayward cartridge filter with Pentair 3/4 HP pump
    500 Gal Fiberglass AG Spa with cartridge filter
    Taylor K-2006 test kit

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    Mod Squad jblizzle's Avatar
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    Re: Water Balance Advice For My Situation

    Your cya is already too high. You should not buy tablets.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
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    Mod Squad pooldv's Avatar
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    Re: Water Balance Advice For My Situation

    I see the light bulb turning on!

    Read this, Pool School - How to Chlorinate Your Pool

    Use generic bleach 8.25% to add chlorine to your pool or liquid chlorine 10%-12%, same thing, just stronger.

    Here is how to read the CYA chart
    Find your CYA level, done (although pool stores are often pretty bad at that one)
    Always keep your FC above minimum to keep your pool sanitized and algae free
    Target is a recommended level to aim for daily
    Shock level is used to kill algae following this process, Pool School - SLAM - Shock Level And Maintain

    It is safe to swim when FC is between minimum and shock level for your CYA. FC levels below minimum leaves your pool unsanitary with increased risk of person to person disease transmission.

    When you are ready for more school start here, Pool School - ABCs of Pool Water Chemistry
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    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: Water Balance Advice For My Situation

    Quote Originally Posted by pooldv View Post
    I see the light bulb turning on!

    Read this, Pool School - How to Chlorinate Your Pool

    Use generic bleach 8.25% to add chlorine to your pool or liquid chlorine 10%-12%, same thing, just stronger.

    Here is how to read the CYA chart
    Find your CYA level, done (although pool stores are often pretty bad at that one)
    Always keep your FC above minimum to keep your pool sanitized and algae free
    Target is a recommended level to aim for daily
    Shock level is used to kill algae following this process, Pool School - SLAM - Shock Level And Maintain

    It is safe to swim when FC is between minimum and shock level for your CYA. FC levels below minimum leaves your pool unsanitary with increased risk of person to person disease transmission.

    When you are ready for more school start here, Pool School - ABCs of Pool Water Chemistry
    Thank you! I've now spent almost $200 on a 50lb bucket of cal-hypo and a 15lb bucket of tri-chlor pucks. Should I keep these even if I switched to the bleach method or should I try to sell them? What if I went out of town for a week and would not be able to care for the pool daily. Would pucks be a good thing to use in that case?

    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Mod Squad pooldv's Avatar
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    Re: Water Balance Advice For My Situation

    Sure, plenty of folks here use pucks when they are on vaca. The cal-hyp will add about 150 ppm CH to your pool. It looks like you have room to add that much. Your CH could use a boost.
    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: Water Balance Advice For My Situation

    Appreciate the tailored advice to my situation. I know you guys read these all the time, so I appreciate your patience and time!
    IG, Plaster, 15,000 gal, Free-form (angular)
    Pentair FNSP 48 DE filter (48 sqft)
    Hayward SP3010X15AZ pump with 1.5 HP motor (installed 3/2015)
    Rock waterfall, large live oak shades half the pool
    Re-plastered April, 2017

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    Mod Squad pooldv's Avatar
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    Re: Water Balance Advice For My Situation

    You're welcome. We were all new here once.
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    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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