I got this 50 gal glass tank from someone and the seam on one of the corners had popped open. I was planning on just taking off that one end and resealing it. I don't want to screw anything up taking it all apart. Is it the GE silicone II thats the same as aquarium silicone? Do you guys have any helpful hints like am I goin about it the right way? I've only made acrylic tanks before.