Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Stains? Calcium?

  1. Back To Top    #1

    Join Date
    Jul 2014
    Location
    Manalapan, New Jersey
    Posts
    96

    Stains? Calcium?

    New home, plaster pool (7 years old). Chemicals are all good (7.4, FC7, CC0, alk110, CH310). There are these stains all over the entire pool, noticed them from the opening. Pool is crystal. Put a small piece of chlorine tablet for 15 minutes. No change. So could be calcium scale or a messed up initial plaster from the build, right? The pool feels rough, some sides are very rough (coming from a vinyl pool, miss my smooth liner ). I can't sand the entire pool, can I? Will sanding with ? 300 grit make it more smooth either way? I could at least do the spa. Ideas? Thanks!!




    23k gal in-ground gunite w/ spa/blower, Sheer descent, Jandy AquaPure SWCG, Pentair 2HP Pump x2, Raypak P-R406A-EN-C 399k BTU gas heater, Polaris 380/Polaris PB4-60 Pump, DE filter w/ separation tank

  2. Back To Top    #2
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,998

    Re: Stains? Calcium?

    Sounds like it could be calcium scale, but your water chemistry doesn't indicate it. Scale usually results from high CH and high PH. Sanding to smooth the surface is fine to do.

    This might help you figure it out. Diagnosing Pool Plaster Problems
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

  3. Back To Top    #3

    Join Date
    Jul 2014
    Location
    Manalapan, New Jersey
    Posts
    96

    Re: Stains? Calcium?

    Getting a quote for acid wash and polish. Any know, that a good idea? Will it make it nice and smooth? I sanded the spa and it works mostly making it more smooth (the discoleration is still there), but sanding the entire pool would take a very long time
    23k gal in-ground gunite w/ spa/blower, Sheer descent, Jandy AquaPure SWCG, Pentair 2HP Pump x2, Raypak P-R406A-EN-C 399k BTU gas heater, Polaris 380/Polaris PB4-60 Pump, DE filter w/ separation tank

Posting Permissions

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