Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 12 of 12

Thread: Testing Calcium

  1. Back To Top    #1
    RaviePoolGirl's Avatar
    Join Date
    Nov 2011
    Location
    Napa, CA
    Posts
    47

    Testing Calcium

    My Calcium level is high and I just have to deal with it for now. I run 550's to 650's. I want to know what I can dilute my sample with so I am not using as much testing reagents and maybe I can get a more precise number. Will distilled water work? 50/50?
    20,000 gal inground hourglass shape with 7' Hot Tub with overflow; Gunite
    Hayward TriStar 1.85/.22 THP - Hayward cartrige filter- SWG.
    Hayward Gas Heater

  2. Back To Top    #2
    Vette's Avatar
    Join Date
    Jul 2012
    Location
    Ohio
    Posts
    404

    Re: Testing Calcium

    Distilled and 50/50 is the way to go. Tap water adds unwanted minerals and differing ratios makes the math a little fuzzier.
    11,700 gallon 21' round 54" deep all-resin AGP - June 2012
    Waterway 1HP 2-speed pump / 100 sq ft cartridge filter
    Hayward 150,000btu Natural Gas heater
    I use and recommend the TF-100 for testing

  3. Back To Top    #3
    RaviePoolGirl's Avatar
    Join Date
    Nov 2011
    Location
    Napa, CA
    Posts
    47

    Re: Testing Calcium

    Thank You! I will do that
    20,000 gal inground hourglass shape with 7' Hot Tub with overflow; Gunite
    Hayward TriStar 1.85/.22 THP - Hayward cartrige filter- SWG.
    Hayward Gas Heater

  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Testing Calcium

    Quote Originally Posted by RaviePoolGirl
    My Calcium level is high and I just have to deal with it for now. I run 550's to 650's. I want to know what I can dilute my sample with so I am not using as much testing reagents and maybe I can get a more precise number. Will distilled water work? 50/50?
    HA! I laugh at your puny numbers!

    Use 10 ml sample, 10 drops of R-0010, then each drop of R-0012 counts as 25 ppm. The extended directions say 3 drops of R-0011, but I use 5 and the number hasn't changed. When you get up there, who cares if it's 810, 825, or 840? The difference is minimal as a percentage.

    If you don't have a speedstir, I pity you. It must take forever to run the test. For what its worth, my CH dropped dramatically just by testing with the speedstir. Thorough mixing is essential. Sometimes it seems to hang at dark blue (almost indigo) and another minute of high speed swirling will get it to go sky blue with no extra reagent.
    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!

  5. Back To Top    #5
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Testing Calcium

    You can also use a 10 mL sample and then each drop is 25ppm. Check out the extended testing instructions sticky in the testing forum.

    Posted from my Droid with Tapatalk ... sorry if my response is short
    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
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  6. Back To Top    #6
    RaviePoolGirl's Avatar
    Join Date
    Nov 2011
    Location
    Napa, CA
    Posts
    47

    Re: Testing Calcium

    Ha Ha Rich, I agree. What does it matter with numbers so high I feel like my color is such a gradual change I just don't know when to call it done. I was actually hoping that I would see a more dramatic change to know it is done. Maybe to 10cc sample would suffice as well. And I do have a "Speed Stir"!!!!!
    20,000 gal inground hourglass shape with 7' Hot Tub with overflow; Gunite
    Hayward TriStar 1.85/.22 THP - Hayward cartrige filter- SWG.
    Hayward Gas Heater

  7. Back To Top    #7
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Testing Calcium

    Quote Originally Posted by RaviePoolGirl
    Ha Ha Rich, I agree. What does it matter with numbers so high I feel like my color is such a gradual change I just don't know when to call it done. I was actually hoping that I would see a more dramatic change to know it is done. Maybe to 10cc sample would suffice as well. And I do have a "Speed Stir"!!!!!
    10 ml sample. 10 drops r-0012. Spin it one cycle. Then 10 drops r-0010. Spin again. 5 drops r-0011, spin until the purple blob is dispersed. Then add another 10 drops of r-0012. That will get you in the ballpark for 500+ CH. If it's still pinkish, add drops 2 at a time. When it starts turning purple or indigo, slow down and do the drops one at a time and let it go a full cycle between drops. When it turns SKY BLUE, like this,, you're done. Not dark blue. Sky blue.

    That's how I do it. Except I do the rough dump starting at 700 CH and go up slowly from there.
    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!

  8. Back To Top    #8
    RaviePoolGirl's Avatar
    Join Date
    Nov 2011
    Location
    Napa, CA
    Posts
    47

    Re: Testing Calcium

    Ok, I will try that [SMILING FACE WITH SMILING EYES]
    20,000 gal inground hourglass shape with 7' Hot Tub with overflow; Gunite
    Hayward TriStar 1.85/.22 THP - Hayward cartrige filter- SWG.
    Hayward Gas Heater

  9. Back To Top    #9

    Join Date
    Apr 2013
    Location
    Phoenix AZ
    Posts
    20

    Re: Testing Calcium

    So is there any way to lower CH? Or do you have to drain and refill with no/low CH water?
    ~20,000 gal in-ground plaster pool, 3/4 HP pump, ~3 sqft sand filter (newly replaced May 2013), TF-100 test kit with Speed Stir!

  10. Back To Top    #10
    RaviePoolGirl's Avatar
    Join Date
    Nov 2011
    Location
    Napa, CA
    Posts
    47

    Re: Testing Calcium

    Drain, refill is cheapest option. I've heard of having a water treatment done at the pool like Reverse Osmosis. Someone please correct me if I'm wrong.


    Sorry So Short.
    20,000 gal inground hourglass shape with 7' Hot Tub with overflow; Gunite
    Hayward TriStar 1.85/.22 THP - Hayward cartrige filter- SWG.
    Hayward Gas Heater

  11. Back To Top    #11

    Join Date
    Feb 2008
    Location
    Denton, TX
    Posts
    5,061

    Re: Testing Calcium

    Quote Originally Posted by burine
    So is there any way to lower CH? Or do you have to drain and refill with no/low CH water?
    Depending on where you live, you may be able to use a reverse osmosis company. Most people just do drains and refills. But if your fill water is the culrpit as it is for most in the desert SW, it doesn't help much. Some people, like Richard320 mentioned, have to deal with high CH levels no matter what. It can be done by managing you CSI in other ways such as by running lower pH and TA levels. Just have to get creative if you are in that situation.

    From this point forward, only use the 10 ml sample, high concentration test for CH. You might go ahead and check your tap water and see what the CH there is. Keep in mind too that the CH in municipal water can vary at times since some places use multiple sources depending on the time of year.

  12. Back To Top    #12
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: Testing Calcium

    Quote Originally Posted by 257WbyMag
    From this point forward, only use the 10 ml sample, high concentration test for CH. You might go ahead and check your tap water and see what the CH there is. Keep in mind too that the CH in municipal water can vary at times since some places use multiple sources depending on the time of year.
    She's just, uh...spiraled...yeah, that will get past the censors

    The Napa Valley has exceptionally hard water. And to think people pay big money for the crud that comes out her tap! Ever hear of Calistoga Mineral Water?

    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!

Posting Permissions

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