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  1. #1
    Join Date
    Jun 2008
    Location
    The Allegheny River 24mile marker pool
    Posts
    263

    Default Removing the Allegheny brown stains on hull?

    Boats out and pressured washed... but how do I removes the brown stain on side of hull? Hull cleaner removes the algae but does nothing on the brown stain! It's a fiberglass hull.

    thanks

  2. #2
    Join Date
    Feb 2008
    Location
    Fox Chapel Marina
    Posts
    233

    Default

    A mixture of hydrogen peroxide and lysol will work. I think the mixture is 60% peroxide, 40% lysol. Could be the other way around. Spray it on, let sit, brush it off. Worked on my last fiberglass boat.



  3. #3

    Default

    I used a product called Mary Kate On/Off. For the most part there was no scrubbing except on the tougher spots

  4. #4
    Join Date
    May 2008
    Location
    Pine Twp.
    Posts
    806

    Default

    Slimy Grimy also works well. Mix it with hot water and spray on with a garden sprayer. Pressure wash it off.

  5. #5
    Join Date
    Feb 2012
    Location
    Moon Township
    Posts
    59

    Default

    Quote Originally Posted by www.stvowners.com View Post
    Boats out and pressured washed... but how do I removes the brown stain on side of hull? Hull cleaner removes the algae but does nothing on the brown stain! It's a fiberglass hull.

    thanks
    I like toilet bowl cleaner and peroxide 50/50 mix. Get the cheap toilet bowl cleaner at the dollar store. It should be a wipe on/spray off application, although I have also sprayed it on hard to reach areas like around the outdrive and then sprayed it off with the garden hose. I have a 21 foot open bow and find that a bottle of toilet bowl cleaner ($1) and a bottle of peroxide (less than $1) will do my boat as many as 3 or 4 times.
    Last edited by 212 Captiva; 4 Weeks Ago at 10:46 AM.
    Dave

    2002 Rinker 212 Captiva
    2008 F-150 to tow it with

  6. #6
    Join Date
    Jun 2009
    Location
    Lower Burrell, PA
    Posts
    23

    Default

    http://www.boatlocal.com/forums/show...t+bowl+cleaner
    Just make sure you dont use the kind with bleach



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