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Thread: sand deposits in plaster

  1. Back To Top    #1

    Join Date
    Dec 2014
    Location
    Houston, TX
    Posts
    9

    sand deposits in plaster

    We have a new unite IG pool with plaster surface. After the plaster was done the PB started the fill process. I brushed daily but after about three days we noticed that some sand deposits had formed on the bottom. They look like dirt that you normally could just brush or vacuum up. However, they won't come up. They seem almost bonded to the plaster surface. The pH of the pool did spike towards 8.6 at times before I could add acid to get it down. The PB is going to have his guy come over and check it out.

    Any ideas on what needs to be done to get rid of these sand deposits? Thanks.
    Dec 2015 fill date IG plaster pool, 8000 gals. Pentair cartridge filter, Pentair filter 1 Hp pump, Pentair Legend cleaner, Pentair Easy Touch Control Center, and TF-100 test kit

  2. Back To Top    #2

    Join Date
    Sep 2013
    Location
    Dallas-Ft. Worth Metroplex, TX
    Posts
    810

    Re: sand deposits in plaster

    If someone is coming out, let them look at it and advise. Make sure you take photos of those spots NOW and send something to your PB in writing so that there is a paper trail just in case, especially if you are not responsible for maintaining the water balance in your pool yet. You cannot be blamed for poor water chemistry if they are the only ones adding chemicals.
    14K Freeform Gunite w/60% Blue Quartz plaster, Quad DE filter, Intelliflo VS Pump + Booster for Cleaner, Aquacal Heat Pump

  3. Back To Top    #3
    dumbcluck's Avatar
    Join Date
    Aug 2013
    Location
    long beach
    Posts
    670

    Re: sand deposits in plaster

    What type of plaster do you have?
    Is it still smooth?
    My pool is only a few months old and I have what looks like dirt on the bottom but is still smooth. I have white plaster apparently with crushed marble. It makes my pool look dirty but maybe that's my fault for keeping the water so clear.
    -Jimbo- My pool was full of dirt and trees. Now it's full of water and children!
    20k gallon inground pool, 18" raised spa 7' round, 8 jets, 3" spa plumbing. Pentair intelliflo 3hp vsp, Easy touch 4 w/ ic 40, CCP 420 cartridge filter, Raypak 407a w/ cupro nickel, Screen logic 2, Pentair intelliph, spa side remote, Pentair 5g color lights pool and spa, TF-100 test kit with speed stir and Dolphin Oasis Z5

  4. Back To Top    #4

    Join Date
    Dec 2014
    Location
    Houston, TX
    Posts
    9

    Re: sand deposits in plaster

    The finish is called Luna Quartz. It is from Wed Edge Technologies. The color is called Pacific. I think they will need to drain the pool and do some sort of acid wash to get the sand free from the plaster finish. We shall see next week what the PB tells us.
    Dec 2015 fill date IG plaster pool, 8000 gals. Pentair cartridge filter, Pentair filter 1 Hp pump, Pentair Legend cleaner, Pentair Easy Touch Control Center, and TF-100 test kit

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