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Thread: No Drain Acid Wash - Success so far

  1. Back To Top    #1

    Join Date
    May 2014
    Location
    San Jose
    Posts
    3

    No Drain Acid Wash - Success so far

    Wanted to share this.

    We got a new pool a month ago. This is an inground pool 26000 gal.

    The pool got white and grey spots. Pool builder wanted to drain the pool and do a acid wash. I read online and found acid wash shaves few years off the plaster, so I told him let's do No Drain Acid Wash. He had never done this before, but I thought no harm anyways as afterwards we will do acid wash if does not work.

    Anyways. We added about 15 Gallons of muriatic acid in pool and turned off all the pumps, skimmers etc. Let it sit overnight and started brushing next day. Within 2 days the color of the pool started to look much better and mottling spots and grey spots were gone. This is only after 48 hours and brushing 4-5 times a day with steel brush. All pumps and skimmer were off during these 48 hours.

    I immediately at this point (after 48 hours) decided to rebalance. The TA was almost 0 and very very low Chlorine. PH was way below 6. So we added the 20lb Alkalinity Up (from Leslie pools). Stirred it in pool as much as I could and turned on skimmer pump at full speed. After 4 hours I then added 15 pounds of Soda Ash with pump running full speed. The result was
    Ph - 7.2
    Chlorine -4
    TA -70
    Bromie- 4
    Phosphates - None

    The pool looks beautiful. Please note- I did not brush at areas too much where discoloration was not a problem. I did not wanted to etch the plaster too much and acted quickly on rebalancing in 48 hours.

    The only issue is now water is cloudy. But I have researched and they say turn on all your water features and pumps and aerated the water. So we will see. I will update soon on cloudiness.

  2. Back To Top    #2

    Join Date
    May 2014
    Location
    San Jose
    Posts
    3

    Re: No Drain Acid Wash - Success so far

    Just an update to this. I let the pump run at full speed for almost 24 hours and it has cleared the cloudy water. I will post the test results soon, but I am hoping that everything should be normal and good now. The pool looks beautiful and all the white & grey spots are gone.

  3. Back To Top    #3
    Richard320's Avatar
    Join Date
    Jan 2010
    Location
    San Dimas, CA (LA County)
    Posts
    18,768

    Re: No Drain Acid Wash - Success so far

    I feel cheated. Where's the before and after pictures?

    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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