Battery Acid Spill

[Chalk]

Not really a spill...but looks like the previous owner of my boat put a screw next to a battery (with no tray) and they got into a fight and the screw won. Unfortunately I thought I had some leaves in the console and the slight stain...now a pronounced stain is not a leaf stain...but battery acid stain. Anyone know of anything other than spraying gelcoat to clean up the acid stain on the gelcoat?

[Gulf Coast]

i use tidy bowl on rust stains, never had battery stain before

[rocket]

Baking soda if there's still acid to clean up???

[Jumptrout51]

Phosphoric acid will do it.

[Chalk]

Phosphoric acid will do it.

Tried that...might take a few treatments..cleaned it some

[Jumptrout51]

Leave it on as long as you can stand it.

[Mister Mullet]

Try some of the Starbright hull cleaners with oxalic acid. Sounds like the brown stain came from the leaves, so it's probably organic and will respond to the oxalic acid. You'll have to read the ingredients to find products with it.

[tin can]

Sell the boat.

[RodBow]

add it to the project boat pile

[dolphinatic]

Did you try the "stuff" you been holding for me for the past few months

It's worked for me before. Just spray it on and let'er sit

[Chalk]

Did you try the "stuff" you been holding for me for the past few months

It's worked for me before. Just spray it on and let'er sit

I did...but I didn't let it sit for fear that it would eat a hole through the boat then the cement floor

The brown color is from the acid eating 5200

[littlejohn]

I use Rust Aide for rust stains and the yellow scum that builds up at the water line. Works great. Just spray it on, wash it off.

[Chalk]

Used the Aluminum brightener (hydrofluoric and phosphoric acid) that I got for Dolphinatic about 4 months ago....let it set and reapplied several times over 3 hours....washed with water...then straight bleach several times for an hour....got it

[kirt123]

Cheapest and best thing I have tried is the rust remover from Home Depot in the red jug, either spray it on or wipe it on and watch any stain dissappear. Kinda scary but after some research it appear to be safe. It has the same ingredient as the more expensive hull cleaner. Think it is Oxacylic acid.