Hi,
There was a thread a week or so ago (which I can`t find) which discussed a problem with corrosion around a through hull. It showed the fitting as being green with verdigris.
My question is not about the cause, in this case I think the consensus was poor electrical bonding, but how do you get the green stuff off - is there a chemical/product that dissolves it, preferably one that doesn`t require wearing of a full HAZMAT suit