I am having trouble getting the glue off of my acrylic tank. Just to brief you alittle, my boyfriend made several acrylic tanks and he put paper on one of the tanks and put it away because he ran out of time making them and the glue from the paper is now stuck to the aquarium. I have no idea what to use to get the glue off so that I can use the aquarium can anyone help me???? I'm loosing my mind over this.