Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: White Flakes

  1. Back To Top    #1

    White Flakes

    I've noticed that I have the white flakes in the pool I have a 10800 gal pool. Here are the test results I had from yesterday
    FC 4.5
    CC 0
    TC 4.5
    PH 7.8
    CH 390
    CYA 90

    I'm going to acid wash my SWG this morning, to see if that helps some. I've started running my aerator for 3hrs at night, and I'm going to add a pint of acid to bring the ph down just a smidge. Is there anything else I can do?? Other than that the water is crystal clear. Thanks for the help

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: White Flakes

    White flakes are calcium scale from the SWG. The SWG has an auto clean cycle that causes any calcium that accumulates on the cell plates to flake off, and they make their way from there into the pool.

    Calcium scaling in the SWG results from a combination of high PH, TA, and CH numbers. You didn't post a TA number, but I expect that it is probably over 100. Assuming I'm guessing right, your best bet is to lower TA.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Re: White Flakes

    What a goof, the TA is 80. It was actually down from last week of 90.

  4. Back To Top    #4
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: White Flakes

    Well, so much for that theory The flakes might still be calcium from the cell, but it is way less likely if TA is 80.

    Are these white flakes rigid (often very easily cracked into small bits) or slimy?
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  5. Back To Top    #5

    Re: White Flakes

    Not slimy, and they crumble when I touch them.

  6. Back To Top    #6
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: White Flakes

    Then I was probably right in the first place. It is unusual to see calcium flakes from the SWG with your levels, but not impossible.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  7. Back To Top    #7

    Join Date
    Apr 2007
    Location
    Ft Lauderdale, Florida
    Posts
    1,455

    Re: White Flakes

    Nittany, how often are you adjusting your pH? Is it possible that your pH is normally running on the high side? If so, Jason was probably spot on, in that your water chemistry is causing the white flakes to appear. However, if it's flaking off and blowing back to your pool/spa, your chems are not too far out of balance. The salt system is doing it's self cleaning, but your water chemistry is just over the hump to allow the scale, and rather than dissolving it back to a solution (self cleaning), it's dissolving it enough to flake off and blow back. A little worse on the chems, and you will have visible scaling that may bridge across the cell blades.
    Keep your pH down, and you should be ok.
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

  8. Back To Top    #8

    Re: White Flakes

    I'm only adjusting it every 2/3 days, then do a full test once a week. It's almost always a little high and needs a pint+of acid. I'll start checking it every day and see if this helps. Thanks everyone for all the help!! I love my new test kit, even though my hubby calls me a mad scientist every time I start testing.

Posting Permissions

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