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Forum: Dealing with Alkalinity and Calcium

High alkalinity and calcium levels are much trickier to resolve than the pool books indicate

  1. Exclamation Sticky Thread Sticky: FAQs & HOWTOs: Swimming Pool Alkalinity

    HOWTO: Step-by-Step Guide to lowering your alkalinity The HOW-TO has moved here: lowering-swimming-pool-alkalinity-step-by-step.html You should...

    Started by PoolDoc‎, 03-29-2006 10:50 AM
    • Replies: 2
    • Views: 56,389
    06-05-2006 01:53 PM Go to last post
  1. cloudy darkish water

    Hope I'm posting in right place. Chlorine-6 TA-80 CH-300 Ph-7.6 Those are my chemical readings and I use the taylor kit to test , but my...

    Started by fhorta‎, 06-18-2014 10:23 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 170,014
    07-04-2014 03:24 PM Go to last post
  2. New here

    Hello all :) Great forum! New pool owner. I'll save my questions for after doing some reading first. Just wanna say thanks for having a great...

    Started by Big Splash‎, 06-03-2014 08:26 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 153,805
    06-09-2014 09:24 PM Go to last post
  3. Strange issue with Alkalinity and pH

    I have a in ground pool, ~13,000 gallons, about 10 years old with pebble tech finish. It has a spa that spills into the main pool. I've always kept...

    Started by Charlie‎, 02-08-2015 03:32 PM
    2 Pages
    1 2
    • Replies: 13
    • Views: 149,891
    02-21-2015 04:05 PM Go to last post
  4. pool got cloudy after adding pH UP

    Hello and thank you for reading this. Yesterday my pool was crystal clear. I checked the water and I was low on pH (7 - 7.2) as well as low on...

    Started by Limoges_swimmer‎, 06-23-2014 07:48 PM
    2 Pages
    1 2
    • Replies: 11
    • Views: 141,134
    06-26-2014 02:09 PM Go to last post
  5. Strange test results -- very high combined chlorine (CC)

    Ok, i'm a new pool owner (not a new pool). Bought a house with a 14x28 IG pool with vinyl liner, sand filter, heater, and auto-cover. Thpool...

    Started by Themadczar‎, 05-30-2013 11:08 AM
    6 Pages
    1 2 3 ... 6
    attaboy, dissappearing cya
    • Replies: 56
    • Views: 137,650
    08-05-2013 10:27 PM Go to last post
  6. New user looking for help with scale

    We put our pool in and started it up in the spring of 2005. It is a Hydraazo finish 18 x 36 at 9 feet at the deepest end. We figure it is about...

    Started by motion guru‎, 05-30-2014 07:20 PM
    2 Pages
    1 2
    • Replies: 11
    • Views: 125,167
    06-07-2014 01:51 PM Go to last post
  7. Lowering TA with Dry Acid Or Muriatic Acid

    My TA is currently 230. It was recommended on another forum that I lower it according to the "HOWTO: Step-by-Step Guide to lowering your alkalinity"...

    Started by CelticDaddio‎, 06-13-2007 12:55 AM
    4 Pages
    1 2 3 ... 4
    • Replies: 30
    • Views: 103,783
    07-05-2007 12:54 AM Go to last post
  8. Question Water Balance: Adjust alkalinity first, then PH . . . Or Not

    Alkalinity is over 200 PPM. In the past I have used muratic acid to lower it, but when I use the Arm and Hammer sodium carbonate, recommended by you,...

    Started by Marter, Dave‎, 05-10-2014 08:39 PM
    2 Pages
    1 2
    • Replies: 12
    • Views: 99,967
    05-30-2014 06:00 AM Go to last post
  9. Low calcium hardness in vinyl pool ok?

    Just a quick question y'all. Just tested the water (per Ben's pool testing kit) and my Calcium Hardness is 60ppm, which is low... BUT, my...

    Started by rockg‎, 04-18-2010 01:25 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 60,068
    06-07-2010 05:21 PM Go to last post
  10. White flakes in water

    Recently, starting about 3 weeks ago, I started noticing white tiny flakes in my pool water. When I grab some with my net, they breakup with...

    Started by steveinaz‎, 06-21-2010 12:26 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 58,733
    06-30-2010 08:44 AM Go to last post
  11. Baking soda turned my pool green

    My ph was low (a constant problem), reading below the minimum 7.0 on my Taylor test kit, so I added a box of Borax. This created a little cloudiness...

    Started by BigStein‎, 08-10-2007 07:06 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 57,142
    08-12-2007 12:10 PM Go to last post
  12. Question about CH Test Coloration

    When using my Taylor test kit to test my CH the instructions say if CH is present the water will turn red. My water does not turn "red" it turns a...

    Started by jmarcum‎, 07-31-2015 05:18 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 43,607
    08-02-2015 02:34 PM Go to last post
  13. Risks with high alkalinity?

    One I got my high alk in line, it was time to add more water due to evaporation losses. This shot my alk right back up of course, since my fill...

    Started by Rangeball‎, 07-10-2006 11:15 AM
    7 Pages
    1 2 3 ... 7
    pix
    • Replies: 62
    • Views: 40,440
    08-15-2006 09:25 AM Go to last post
  14. Calcium Source and others...

    Is a calcium blend ( with cacl2, nacl, kcl, mgcl2) such as many brands sold online okay to use for increasing calcium hardness? How do you know...

    Started by Redwolf‎, 06-22-2013 04:13 PM
    2 Pages
    1 2
    • Replies: 10
    • Views: 38,638
    05-12-2015 03:31 PM Go to last post
  15. Increased Ph 8.0? Should I decrease and if so, how?

    Pool looks good but numbers are so so. Cl is 4-6 cya 80 ph has been 8.0. Should I decrease it and if so how? I use the Taylor test kit. It's great....

    Started by cdingess‎, 06-16-2016 03:47 PM
    2 Pages
    1 2
    • Replies: 11
    • Views: 38,083
    05-31-2018 06:59 PM Go to last post
  16. Smile New Pool build

    I am retired and had a pool (gunite) and spa built this spring for my wife and I and we have been enjoying it immensely. It is a small freshwater...

    Started by Usilpool‎, 06-18-2014 02:40 PM
    2 Pages
    1 2
    • Replies: 11
    • Views: 37,324
    06-23-2014 09:08 AM Go to last post
  17. Calcium Hardness

    I was told I need to add 45lbs of hardness plus to my pool and 8 lbs of conditoner. We have only lived in this house for 2 years. Pool was already...

    Started by elliott4865‎, 06-20-2014 02:46 PM
    2 Pages
    1 2
    • Replies: 12
    • Views: 37,052
    06-24-2014 10:57 AM Go to last post
  18. Cool High PH and Low Alkalinity?

    Hi, I'm new to the forum! :) I have a new pool and I'm a little confused about this issue. I had my water tested today and was told I had a high PH,...

    Started by Neo Seeker‎, 09-29-2011 07:31 PM
    • Replies: 5
    • Views: 35,991
    05-23-2012 09:38 PM Go to last post
  19. Pool store advice to lower alkalinity - three day muriatic acid dose method

    15,000 gallon IG plaster Alkalinity here is naturally high out of the tap, pool tested at 220ppm. Their test said pH was 8.2, all mine say it's...

    Started by aquarium‎, 06-28-2006 09:57 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 30,151
    07-03-2006 10:04 PM Go to last post
  20. Raising pH and Alkalinity

    Test results Cl= 5 oto test pH=7.2 alk= 90 cya= n/a ca=didn't test, vinyl liner water temp= 72f 21,000 gal pool

    Started by TRHOD12‎, 05-23-2011 07:28 AM
    • Replies: 5
    • Views: 28,992
    05-23-2011 10:39 PM Go to last post
  21. Calcium

    Is there a "grocery store" source for adding calcium?

    Started by zelmo‎, 04-06-2006 06:45 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 35
    • Views: 26,897
    07-01-2006 05:39 PM Go to last post
  22. how much muriatic acid

    We have a 18x48 frame set intex pool. It holds about 5,580 gallons of water. We just filled it with water May 30. We have been adding muriatic...

    Started by wolfcue‎, 06-07-2006 11:24 AM
    2 Pages
    1 2
    • Replies: 10
    • Views: 26,876
    06-07-2006 05:55 PM Go to last post
  23. Wink Green Hair????

    I am a newbie also. I have an above ground 24' round. We filled it up using water that goes thru our water filtration system. After testing, I...

    Started by readytoscream‎, 06-01-2006 11:00 PM
    5 Pages
    1 2 3 ... 5
    • Replies: 41
    • Views: 26,539
    06-13-2006 07:08 PM Go to last post
  24. Total Alkalinity=0, yes zero!

    Need a little help with this one because I've never seen this before. My neighbor opened his pool yesterday (24K gal vinyl IG pool, Chlorine)....

    Started by myLABSpool‎, 05-20-2012 09:53 AM
    • Replies: 6
    • Views: 26,452
    06-03-2012 12:51 PM Go to last post
  25. Where to buy muratic acid?

    I've been purchasing DuPont PH and Total Alkalinity decreaser with the active ingrediant of Sodium bisulfate at $7 for 4lbs. I have to add 1-2...

    Started by s0undone‎, 06-10-2006 01:19 PM
    • Replies: 9
    • Views: 26,321
    06-11-2006 11:41 AM Go to last post
  26. Caltreat for lowering calcium hardness in pools

    Has anyone heard of this product or used it to reduce calcium levels? Saw it online but not really sure if it works or we are throwing money away.

    Started by Linda needs help‎, 06-28-2012 09:54 PM
    2 Pages
    1 2
    attaboy, calcium, caltreat, sticky
    • Replies: 12
    • Views: 25,988
    04-05-2013 01:38 PM Go to last post
  27. Pool liner feels like sandpaper

    I noticed a previous post about this, but it was an igp, mine is an agp. I have no idea how to deal with it. The pool store gave me some scale...

    Started by pleasehelp‎, 05-29-2012 05:02 PM
    2 Pages
    1 2
    • Replies: 19
    • Views: 25,628
    06-03-2012 08:26 PM Go to last post
  28. calcium hypo vs. calcium chloride

    Hi, I have a plaster pool which has a low calcium reading according to my recent test. It is at 160 and I need to get it up to between 200-400. I ...

    Started by Oclat‎, 06-03-2010 08:48 PM
    • Replies: 5
    • Views: 24,300
    06-04-2010 04:06 PM Go to last post
  29. PH keeps rising

    Alkalinity is 80, calcium hardness 220, TDS 1000, Phosphates 0, CYA 40. Chlorine stable at 2+ppm. I use 3" trichlor tabs but still am constantly...

    Started by Devon‎, 09-29-2012 08:56 PM
    2 Pages
    1 2
    • Replies: 14
    • Views: 24,245
    11-01-2012 02:44 PM Go to last post
  30. Lime Softening to Reduce Excess Hardness - Bucket Test & Treatment Process

    ------- 2018 - Do NOT use this process without talking to me (PoolDoc) first -------- ---------- If you are unable to reach me, try an...

    Started by PoolDoc‎, 06-19-2012 04:26 PM
    #faq
    • Replies: 0
    • Views: 23,475
    06-19-2012 04:26 PM Go to last post

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