Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 2 of 2

Thread: Could this be scale?

  1. Back To Top    #1

    Could this be scale?

    Hi Everyone!
    After we opened our pool this year and got it clear, we have a white/cream colored "scale" all over the bottom of our vinyl pool. We have had this pool for 7 years and have never had this before. I have scrubbed and vacuumed and some of it comes off, but in the deep end it hasn't at all. Here are my numbers for the pool as of earlier this week:
    Chlorine-5+(med. yellow)
    Hardness is 230
    CYA-0 (I have put close to 2lbs in today, so I will try to get a reading tomorrow) I have been vac. to waste and refilling with our well so much that I know I would need this.
    Here are the numbers for my well water:

    I hope someone can give some directions on what to do with this. Thank you!
    Andrea B.
    18 X 36 inground vinyl
    35,000 gallons
    Hayward S244t sand filter
    3/4 hp pump
    1 skimmer, 2 return jets(shallow and deep)

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Houston, Texas

    Re: Could this be scale?

    If you can collect some of it and drop some MA on it to see if it will fizz. If it does then it is probably scale. You would need to lower the TA to about 70-90 and lower pH to7.2 to prevent scale from forming again.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

Posting Permissions

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