OOOK so i have a 280gal acrylic tank. I bought it from an individual, and it used to be set inside a wall. On the front of the tank it has what looks to be a thin line a possible drywall plaster all the way around the front... any way of getting this off?? i tried novus and my buffer but it didnt do it. i tried a plastic razor, no work, i started to grab a metal razor but dont want to gouge the acrylic. Suggestions any1?!