Jim Biron

I made the error of a lifetime. I was converting from Bromide to Soft Soak and when it came time to add the stain and scale control I put in the wrong one. I got a very sticky brown residue that is sticking to the sides of my fiberglass spa. Can anyone help me figure out the best way to remove this goo? I've tride paper towels, Scotch brite, etc... but the goo sitcks to it and I'm not actually doing any cleaning. Help!!! Jim