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Thread: Getting ready for an Acid Wash

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    Join Date
    Jun 2013
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    Southwest Arizona (Yuma)
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    Getting ready for an Acid Wash

    Ok I tried the vitamin C and the Chlorine tablet on several spots around the pool and neither one removed or even lightened the stains in my pool. So yesterday I picked up some Muratic Acid and tried that on the first step of my spa. Stains came right out. So Acid Wash it is.

    I know the basic procedure and have a basic idea of the supplies I need but just wanted to get some pointers from the pros here.

    I will have about 5 days to get this done. How long does it take one of those sump-pumps to drain a 15K Gallon pool?
    My pool:
    Built 2004, 14K gal, IG plaster,Pentair WhisperFlo 2 HP pump(1 speed), Pentair FNS Plus DE filter,
    In Floor cleaning system, Attached Spa with Spillover seperate WhisperFlo pump for jets.

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    poolsupplysales's Avatar
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    Jan 2012
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    Tulare, CA
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    Re: Getting ready for an Acid Wash

    A submersible pump with a 2" hose will drain your pool in about 6 hours and the acid wash will take about 4 hours 2 days to refill. I should warn you the acid will etch the plaster then you will have rough plaster and that can cause black algae problems in the future due to the fact that black algae has a root system like any other plant and grows easily when the plaster is rough.

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    Southwest Arizona (Yuma)
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    Re: Getting ready for an Acid Wash

    Quote Originally Posted by poolsupplysales
    A submersible pump with a 2" hose will drain your pool in about 6 hours and the acid wash will take about 4 hours 2 days to refill. I should warn you the acid will etch the plaster then you will have rough plaster and that can cause black algae problems in the future due to the fact that black algae has a root system like any other plant and grows easily when the plaster is rough.
    Thanks for the honest advice I want to do the acid wash because as you can see in the pic it looks terrible. I realize the added potential for algae but we plan to get the plaster and tiles redone in a couple of years so this get us by until then hopefully
    Attached Images Attached Images
    My pool:
    Built 2004, 14K gal, IG plaster,Pentair WhisperFlo 2 HP pump(1 speed), Pentair FNS Plus DE filter,
    In Floor cleaning system, Attached Spa with Spillover seperate WhisperFlo pump for jets.

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    Melt In The Sun's Avatar
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    Oct 2009
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    Tucson, AZ
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    3,899

    Re: Getting ready for an Acid Wash

    Looks like some nasty copper stains...almost certainly cause by (over)use of copper sulfate algeacides. If you get black algae (which can be prevented), it will still look better than that!

    Do you have a main drain? If you do, you might be able to just pump to waste with the main drain as your suction...depends on how the plumbing is set up.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

  5. Back To Top    #5

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    Jun 2013
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    Southwest Arizona (Yuma)
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    125

    Re: Getting ready for an Acid Wash

    All done with the acid wash refilling the pool now I will post some before/after pics in a couple of days. It was ALOT of hard work but I think it turned out pretty good and was worth it
    My pool:
    Built 2004, 14K gal, IG plaster,Pentair WhisperFlo 2 HP pump(1 speed), Pentair FNS Plus DE filter,
    In Floor cleaning system, Attached Spa with Spillover seperate WhisperFlo pump for jets.

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    ronipooh's Avatar
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    Dec 2013
    Location
    Kissimmee, Florida
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    64

    Re: Getting ready for an Acid Wash

    So are you ever going to post those pics of the "after" acid wash? I've been considering it myself but want to see just how much better it looks after. My pool was not well taken care of all of it's life, I am trying to restore it to ok looking until I can fix the other things that were not taken care of with this house.
    13,700 gal, outdoor IG Plaster, (deteriorating)Sta rite Posi Flo II ptm 70 Cartridge, Paramount PCC 2000 in floor pop up sweeper, RedLeopard Orbit automatic pool cleaner, FLOLight return eyeballs, 1 HP Pentair Superflo single speed pump, built in 1992
    370 Gal 2005 stand alone Marquis Destiny spa w/Ozonator, chlorinated

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    Jun 2013
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    Re: Getting ready for an Acid Wash

    I apologize but I posted before and after pics on another thread and forgot to do it on this one.

    Follow the link...


    became-a-supporter-let-me-tell-you-why-t72133.html
    My pool:
    Built 2004, 14K gal, IG plaster,Pentair WhisperFlo 2 HP pump(1 speed), Pentair FNS Plus DE filter,
    In Floor cleaning system, Attached Spa with Spillover seperate WhisperFlo pump for jets.

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