Oxalis acid

[William_H]

I get that stain from the water line up every few months. I put some oxalic acid in a spray bottle with water. I swim out to the boat and start spraying. I wear a swim mask and snorkel and try to keep back from the spray. No problems so far. The results are dramatic. Once I have gone around the small boat I start again to fix the spots I missed. I just splash it with salt water to wash it off. I used to buy oxalic as a stain remover (Diggers) but it seems it is not so easily available. The same company make a new stain remover (granules) but apparently it does not contain oxalic acid. Still works OK though. good luck olewill

 

[Baggy]

I swim out to the boat and start spraying. I wear a swim mask and snorkel and try to keep back from the spray. No problems so far. . good luck olewille

is oxalic acid any good against crocs and sharks..... :nonchalance:

 

[Robert Wilson]

is oxalic acid any good against crocs and sharks..... :nonchalance:[/QUOTE]

Do you get many in Suffolk? !! Yikes.

 

[John100156]

As others have said, buy on eBay. But for FFS don't add wallpaper paste - it's perfectly effective as a 10% solution in water.. As it dries, it becomes more concentrated, then rinse off.

Well for the topsides whilst in the water, I must say that I have mixed/used it with wallpaper paste and fairy liquid many times, it just seems to adhere better and stay in contact/solution longer, rather than just a thin film spray that immediately runs down to the AF, the tint of colour lets you see where it's applied - obviously don't let it completely dry as Baggy has forewarned and thoroughly rinse off with a light scrub after, I did the whole starboard side of my F43 a few months ago, it worked great removing all staining above WL and some stubborn stains from some AC outlets......