Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 11 of 11

Thread: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

  1. Back To Top    #1

    Join Date
    Jul 2010
    Location
    North Bergen, NJ
    Posts
    172

    Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    Folks, sorry about this rookie question but Im learning all I can in your Pool School ABC sections....

    So recently I have been trying to even out my water chemistry to the appropriate Salt Water Vinyl pool recommendations based on the SWG Water guide. Based on test kit readings, I have Low CYA (almost 0) and High Alkalinity at 160 (which I've recently lowered from 180 using some techniques recommended here)

    But now the more I read and the more I learn, Im kinda confused at a few things and how I should overall attack balancing the numbers ultimately. Is CYA a certain percentage of your Total Alkalinity?....if so, by trying to increase the CYA to normal levels, am I just now also adding to the higher Total Alkalinity in my pool?


    Which setting should I start with first?

    Do I get the CYA normal at 40ppm? (is 40 best for SWG?)

    Do I then attack the high Alkalinity and get it down to 80ppm?....then work on rebalancing my PH up again to 7.4-7.6 by aeration?

    Should I worry at all about my Free Chlorine level if its over 5ppm? or does the SWG take of all that automatically?



    Thanks...if anyone cares to help me thru this a little, I'd be most appreciative. I kinda understand it but just need a little walk thru at a hi level
    Design 14x26 (10,000 gal) in ground vinyl pool, 2 Wide Mouth Skimmers, 3 Returns
    Equip 3.0 HP Pentair VS pump motor, 48 FNS Plus DE filter, IC20 SWCG, 400Btu NG Heater
    Extras Easy Touch Automation, Pentair LED Lite, Kreepy Krawl Racer pressure cleaner
    Water pH 7.5, Total Alk 90, Free Cl 4.5, Combine Cl 0.25, CYA 65, CH 275, Salt 4100ppm, Borates (Boric Acid) 50ppm

  2. Back To Top    #2
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    CYA doesn't increase your TA. CYA should be 70-80 with a SWG. FC will be relative to your CYA level. Check the chart in pool school to verify where you need it. Your SWG will make chlorine based on pump run time and the % output you have it set at. Continue using acid and aerating to lower your TA.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

  3. Back To Top    #3

    Join Date
    Jul 2010
    Location
    North Bergen, NJ
    Posts
    172

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    Is it safe to swim this weekend if my numbers arent where they should be but the water is clear?

    Im still currently at TA of approx 120-130ppm and my PH is around 6.8 or maybe even under (my poolmaster solution kit only goes down to PH 6.8 readings) but Im aerating my 10,000 pool by pointing the returns up to the surface and have my Pentair VS 3HP pump running at 3100RPM. Btw, how long should aerating take like this to get some pH up to at least 7.2?
    Design 14x26 (10,000 gal) in ground vinyl pool, 2 Wide Mouth Skimmers, 3 Returns
    Equip 3.0 HP Pentair VS pump motor, 48 FNS Plus DE filter, IC20 SWCG, 400Btu NG Heater
    Extras Easy Touch Automation, Pentair LED Lite, Kreepy Krawl Racer pressure cleaner
    Water pH 7.5, Total Alk 90, Free Cl 4.5, Combine Cl 0.25, CYA 65, CH 275, Salt 4100ppm, Borates (Boric Acid) 50ppm

  4. Back To Top    #4
    Defgufman's Avatar
    Join Date
    Mar 2015
    Location
    Savannah GA
    Posts
    577

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    You could add a little Twenty Mule Team Borax to raise the PH without raising the TA by too much. Aerating takes a while on my pool.
    Inground 13,200 gal Vinyl, Pentair 3/4 hp pump, Pentair Sand Dollar filter, Polaris 280

    Pool School, Pool Math, CYA to FC ratio chart, Testing Kits

  5. Back To Top    #5
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    Get some CYA dissolving in a sock in the skimmer, the TA doesn't hurt anybody, add a little borax to bump the ph up, and have fun swimming. The scary thing is all the thousands of people who will be in a pool this weekend who have no clue about whether it is safe or not.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

  6. Back To Top    #6
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    People tend to obsess over TA too much, it really is the last step in fine tuning a pool and there should be no rush getting it done. I would add some Borax to raise pH and swim then worry about the TA at some point later.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

  7. Back To Top    #7
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    Here is how to gradually lower TA, Lowering Total Alkalinity. No hurry.

    Also, here is the Water Balance for SWCG pools
    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

  8. Back To Top    #8

    Join Date
    Jul 2010
    Location
    North Bergen, NJ
    Posts
    172

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    so if I understand the order of importance it would be:

    Get CYA set properly first?

    Get pH set properly 2nd?

    Get Alkalinity set later on...its not a high priority in comparison to the first 2?

    Where would Chlorine fall into this?...or should I not worry since I have a SWG and it should be automating the chlorine properly?
    Design 14x26 (10,000 gal) in ground vinyl pool, 2 Wide Mouth Skimmers, 3 Returns
    Equip 3.0 HP Pentair VS pump motor, 48 FNS Plus DE filter, IC20 SWCG, 400Btu NG Heater
    Extras Easy Touch Automation, Pentair LED Lite, Kreepy Krawl Racer pressure cleaner
    Water pH 7.5, Total Alk 90, Free Cl 4.5, Combine Cl 0.25, CYA 65, CH 275, Salt 4100ppm, Borates (Boric Acid) 50ppm

  9. Back To Top    #9
    n240sxguy's Avatar
    Join Date
    May 2014
    Location
    Benton, KY
    Posts
    1,800

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    Chlorine is #1, and directly related to #2. Then ph, then TA and CH. You need to keep an eye on your FC readings to make sure your SWG is making enough. That's also related to your CYA because of you don't have enough, the sun will burn it off.


    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

  10. Back To Top    #10
    Isaac-1's Avatar
    Join Date
    May 2010
    Location
    SW Louisiana
    Posts
    6,711

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    In your case I would say CH dead last, it is NOT needed by vinyl pools, but may be needed for some equipment warranties, particularly heaters, even though CH should have no effect heaters, some of the manufacturers seem to just copy an industry standard chemicals level chart into their warranty.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from http://tftestkits.net
    ~Remember TFP counts on your donations to keep this site ad free~

  11. Back To Top    #11
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,999

    Re: Does Increasing CYA(Stabalizer) also increase your ALKALINITY Readings?

    You kind of have the right idea.

    Chlorine must always be above the minimum level for your CYA level or algae will grow. Chlorine CYA Chart
    You have to have CYA in the water to keep the sun from burning off your CYA too fast, and to make the pool more comfortable for swimmers.
    PH needs to be maintained between 7.2 and 7.8 at all times.

    TA needs to be monitored and managed, it often will correct itself.
    CH needs to be monitored and managed in certain situations where there is hard or soft water.

    Here is more info, ABC's 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

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •