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Thread: White scale at waterline of fiberglass pool

  1. Back To Top    #1

    Join Date
    Apr 2016
    Versailles Kentucky

    White scale at waterline of fiberglass pool

    Split by moderator from HERE. Please ask your own questions in your own thread to avoid confustion when we are trying to help. Thanks, jblizzle

    We have the same problem, blue fiberglass pool with white line at water level. We contacted the pool manufacturer who in turn sent out their repair guy. Prior to the repair person arriving we had the pool opened professionally and the water was crystal clear and balanced. The repair person sanded the pool from top to water line, then added rubbing compound and buffed. Proceeded to drop the water level down a foot from the water line and repeated the steps. To say that my pool is now a disaster is truly an understatement. After 3 weeks of trying everything known to man we cannot get our water to clear up. Our water is tested on a weekly basis by the pool place that installed our pool the water itself is in balance but the water is cloudy, can't even see the bottom of the pool!! We have gone as far as replacing the filters and cleaning the new filters every two-three days. When cleaning the filters the water looks like chalky water. We've shocked the pool, added water clarifier, nothing has worked. We have been putting a skimmer basket sock on every day, it will collect some but not enough to make a difference.

    Will also let you know that the work the repair guy did did not solve the white line issue as it was back within 12 hours and not only do we have the line at the water line you can see the line a foot below the water line! Any ideas or suggestions on clearing the water would be greatly appreciated. The only thing we know to do at this point is drain the pool and refill.

  2. Back To Top    #2
    Mod Squad Texas Splash's Avatar
    Join Date
    Jun 2014
    South-Central Texas, Marion/San Antonio

    Re: White scale in fibreglass pool

    kypool16, hello and welcome to TFP! While it's hard to tell if you may have a calcium/staining issue, you certainly appear to have a chemical imbalance issue going on. Calcium scale or not, there is no reason why any of us should have to clean our filters every 2-3 days unless there is a full-blown algae bloom taking place. So I would like to help and make the following recommendations to you:
    - Priority #1 ... test your own water! It's not hard, and the guidance we receive from so-called "industry experts" would leave you shocked. We recommend the TF-100 or Taylor K-2006C test kits because they are user-friendly and test everything you need to have crystal clear water. If you have a suspected calcium issue, it will tell us that as well.
    - Take a few moments to visit our Pool School page (link below) as it contains the basic you need to understand water chemistry.

    Finally, please add your pool info to your signature by going to the top of the TFP web page (just under the Pool School button) and select "SETTINGS". On the next page look to the left for a menu bar that says, “MY SETTINGS” and go to "EDIT SIGNATURE" to enter your pool and equipment info there. It will help us later. This link may also help you: Pool School - Read This BEFORE You Post.

    Welcome to TFP. We hope to help you more in the future to make your swimming seasons enjoyable.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    If you enjoyed your TFP experience, please consider donating to Support TFP!

  3. Back To Top    #3

    Join Date
    Apr 2015

    Re: White scale at waterline of fiberglass pool

    Did anyone ever try the acid bath Scott from NJ suggested? Any success?

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