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  1. #1
    Join Date
    Apr 2014
    Location
    Owensboro, KY
    Posts
    204

    Default Brown Water Stained Hull

    So I just got back from a week at the lake and the bottom of my boat has a brownish scum on the bottom. I washed it and it wont come off? What do you guys use to remove this? Also how to you get under where the bunks are?

  2. #2
    Join Date
    Jan 2003
    Location
    Minnesota and Wisconsin
    Posts
    1,197

    Default

    I picked up some Starbrite Hull Cleaner at Walmart a few yars ago. Basically diluted Muratic acid I think. Not sure they still carry it but it worked great - litterally no hard rubbing. but you do need to wax after you use it.
    http://www.starbrite.com/category/hull-bottom-cleaners
    If you believe something to be true, it will be - in it's consequences.

    2009 MasterCraft ProStar 197 - DD - 5.7L - 325HP - Zero Off

  3. #3
    Join Date
    Aug 2009
    Location
    Montana
    Posts
    3,062

    Default

    Heard of this product on here a few years ago. Never had to use it but still remember it due to the quirky name: "slimy grimy"
    http://slimygrimy.com/before-and-after/

    2007 Moomba Outback - going, going, GONE
    2015 "NOT A MOOMBA"

    Why Not? Play Hard! Get wet

  4. #4
    Join Date
    Aug 2011
    Posts
    2,522

    Default

    Yep...

    Or take it to the marina and have them acid wash(same stuff) it.

    They'll use a crane to lift the boat off the trailer so you get everything clean, my marina charges around $220.
    http://www.instgram.com/jlyons30
    2002 Moomba Mobius LSV - Sold
    2006 Moomba Mobius LSV - Sold
    2017 Moomba Craz - Enzos, Lead

  5. #5
    Join Date
    May 2015
    Location
    NC
    Posts
    461

    Default

    Try using (at your discretion) a 50-50 blend of cheap toilet bowl cleaner and hydrogen peroxide.

    I like using the cheap stuff from Dollar General. It comes in a white bottle and it's more of a gel substance.

    I mix it in a spray bottle and only use it on the scum line. You will need to wax after but it really cuts thru the stains!

    Your spray bottle will only last a time or two and it will be toast.
    2003 Mobius LSV GG Edition - Sold!

  6. #6
    Join Date
    Aug 2011
    Posts
    2,522

    Default

    Watch out for the fumes, they can be brutal... lol..
    http://www.instgram.com/jlyons30
    2002 Moomba Mobius LSV - Sold
    2006 Moomba Mobius LSV - Sold
    2017 Moomba Craz - Enzos, Lead

  7. #7
    Join Date
    Mar 2011
    Location
    Houston, TX
    Posts
    251

    Default Brown Water Stained Hull

    FSR (Fiberglass Stain Remover) from Academy. Inexpensive and works well. Apply and rub off shortly after and it cuts through the stain and will go back to polished clean hull.

  8. #8
    Join Date
    Aug 2015
    Posts
    1

    Default

    i have been using the name is The Works toilet bowl cleaner i buy at grocery store for years wipe on wipes off on second wipe after minute or so scum disappears i can do whole underside in less than half hour no scrubbing just do about 2-3 ft section at a time its under 3 dollars a bottle safe for fiberglass

  9. #9
    Join Date
    Mar 2012
    Location
    Uniontown, oh
    Posts
    263

    Default

    Quote Originally Posted by viking View Post
    Heard of this product on here a few years ago. Never had to use it but still remember it due to the quirky name: "slimy grimy"
    http://slimygrimy.com/before-and-after/
    This stuff is amazing. Literally spray on And it disappears. I used it on my old boat earlier this year when water stained it and it took it right off. Even took off old stains on underneath
    Nick

    2012 moomba mojo 2.5
    2005 Moomba outback-sold

  10. #10
    Join Date
    Jun 2012
    Location
    Sugar Land, TX
    Posts
    716

    Default

    Quote Originally Posted by Ironcross25 View Post
    This stuff is amazing. Literally spray on And it disappears. I used it on my old boat earlier this year when water stained it and it took it right off. Even took off old stains on underneath
    I used to use it on mine when we boated in a brackish river. It works great and isn't as harsh on the nostrils as some of the other options. Spray on, wash off.
    2011 Mobius LSV

    Ron

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