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Thread: Plaster Repair, and stain removal while draining pool

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    Plaster Repair, and stain removal while draining pool

    I'm in the process of draining my pool per the recommendations in this previous thread: New pool owner really high CYA and CH what should I do

    Draining the pool has made me realize that the "weird spots" on the stairs are plaster damage that will spread if I don't repair them. Is this something that I can fix myself or should I call in a plaster company to fix it?
    Attachment 60732
    There are two spots like this on the stairs that I would want to repair.

    Additionally I have some staining around a couple of my return jets, and gray staining all over the pool. Any advice on what it is and how to remove it?
    Attachment 60734IMG_6153.jpg
    Thanks,

    Ryan
    18,000 gallon IG Plaster cartridge Pentair Clean and Clear Plus 1 speed pentair pump original build in the 60s not sure when remodeled. Testing with Taylor k2006

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    Mod Squad pooldv's Avatar
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    Re: Plaster Repair, and stain removal while draining pool

    My guess is calcium scale. Is it raised and rough?

    More here, Pool School - Calcium Scaling
    And here, Pool School - Pool Stains
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    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

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    Re: Plaster Repair, and stain removal while draining pool

    Quote Originally Posted by pooldv View Post
    My guess is calcium scale. Is it raised and rough?

    More here, Pool School - Calcium Scaling
    And here, Pool School - Pool Stains
    It is actually very smooth, I'm not sure if it's raised, in fact it may be slightly lower. I tried a spot acid wash with 50/50 water and muriatic acid, then brushed it. That didn't really do anything to the stain.
    18,000 gallon IG Plaster cartridge Pentair Clean and Clear Plus 1 speed pentair pump original build in the 60s not sure when remodeled. Testing with Taylor k2006

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    Mod Squad pooldv's Avatar
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    Re: Plaster Repair, and stain removal while draining pool

    Ok, we'll need to see some test results then on that. The last few sets of test results would be best.
    TFP Moderator
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    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

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