I heard oxalic acid diluted with water is good for removal of the brown stain around the water line. Anyone have any experience with this? Thanks, John
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B
Bruce Hill
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Roland
Oxalic Acid
While in Maine this summer I watched a lobsterman brushing a liquid on the topsides of his hull. All grime, brown stains, etc. came off with a rinsing. It did not effect the the boot stripe or bottom paint at all. He was using a product called On and Off by MaryKate. It contains hydrochloric and oxalic acids. I am planning on trying on my hull when I haul out next. -Roland s/v Fraulein II
While in Maine this summer I watched a lobsterman brushing a liquid on the topsides of his hull. All grime, brown stains, etc. came off with a rinsing. It did not effect the the boot stripe or bottom paint at all. He was using a product called On and Off by MaryKate. It contains hydrochloric and oxalic acids. I am planning on trying on my hull when I haul out next. -Roland s/v Fraulein II
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Al
On and Off by Marykate is an...
aqueous solution of Oxalic acid (<10%), phosphoric acid (<10%), and hydrochloric acid (20-30%) according to the MSDS for the product. Pretty strong stuff, make sure you rinse well!
aqueous solution of Oxalic acid (<10%), phosphoric acid (<10%), and hydrochloric acid (20-30%) according to the MSDS for the product. Pretty strong stuff, make sure you rinse well!
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Toni
Lysol works
Lysol Toilet Bowl cleaner (white package) really works and is readily available. Lysol has lots of different formulas. You need the one that has 9.5% hydrogen chloride as the active ingredient. We spread it on with a sponge, let it sit for a while, and then clean it off. And we always use gloves. A fellow boater suggested we use it. We had a brown stain that had been there for 2 years and the Lysol took it off. We were amazed.
Lysol Toilet Bowl cleaner (white package) really works and is readily available. Lysol has lots of different formulas. You need the one that has 9.5% hydrogen chloride as the active ingredient. We spread it on with a sponge, let it sit for a while, and then clean it off. And we always use gloves. A fellow boater suggested we use it. We had a brown stain that had been there for 2 years and the Lysol took it off. We were amazed.
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Dakota Jim Russell
On and Off . . .while in the water
We use On and Off while the boat is in the water as it works extremely well without a lot of rubbing, and when it is in the water, the bottom paint is not affected. We use a disposable type of mop for this operation and do it from the dock. It also allows for ample rinsing. Only problem is the aft end . . . which we carefully address after the boat is hauled for winter storage . . . and again using ample rinsing. BTW, rubber gloves for the aft end helps keep the pinkies in proper condition.
We use On and Off while the boat is in the water as it works extremely well without a lot of rubbing, and when it is in the water, the bottom paint is not affected. We use a disposable type of mop for this operation and do it from the dock. It also allows for ample rinsing. Only problem is the aft end . . . which we carefully address after the boat is hauled for winter storage . . . and again using ample rinsing. BTW, rubber gloves for the aft end helps keep the pinkies in proper condition.
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Jim Willis
Oxalic better than IG Pink most waterline stains
Over the years this question has come up. I have had good reports about oily stains, but in lakes and rivers, it did not work. Detailers I have talked to like Davis's FSR ( an oxalic acid paste), but On and off and several other acid-based cleaners also work well. I am wondering whether sealing new gelcoat with our Superglase or an acrylic would prevent penetration of the stains - anybody try it? ALW
Over the years this question has come up. I have had good reports about oily stains, but in lakes and rivers, it did not work. Detailers I have talked to like Davis's FSR ( an oxalic acid paste), but On and off and several other acid-based cleaners also work well. I am wondering whether sealing new gelcoat with our Superglase or an acrylic would prevent penetration of the stains - anybody try it? ALW
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Paul Akers
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Peter Roach
Wood Bleach
Is another name for oxalic acid. You can buy it at most hardware stores and it will usually take the yellow stain off with little or now scrubbing. I use a lawn pump type sprayer to apply it. MAKE SURE YOU USE GLOVES!!! It crystallizes and will work its way under your skin. Burns like crazy. I believe it breaks down into salts so it should be environmental friendly. This is what most of the hull cleaners contain.
Is another name for oxalic acid. You can buy it at most hardware stores and it will usually take the yellow stain off with little or now scrubbing. I use a lawn pump type sprayer to apply it. MAKE SURE YOU USE GLOVES!!! It crystallizes and will work its way under your skin. Burns like crazy. I believe it breaks down into salts so it should be environmental friendly. This is what most of the hull cleaners contain.
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Victor Robert
On & Off vs Lemons
On & Off works, but be careful. I spilled a little on my leg the other day and I was in the water in ten seconds. Its a great motivator. Paul, I like the lemon idea. It seems much safer. Do you have any stats on how many drinks I would have to order to get enough lemons for a 42' hull ?
On & Off works, but be careful. I spilled a little on my leg the other day and I was in the water in ten seconds. Its a great motivator. Paul, I like the lemon idea. It seems much safer. Do you have any stats on how many drinks I would have to order to get enough lemons for a 42' hull ?
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