Hey guys, I’m working on getting a hand me down tank ready to set up. I re sealed the tank itself and got all of the glass clean from water stains but the clear plastic section of the canopy is proving very difficult. I don’t know what kind of plastic it is. I’ve tried a magic eraser, vinegar, 91% isopropyl alcohol and lots of elbow grease. I can’t get this stuff off. Whenever I try something it looks like it goes away and then as soon as whatever I used dries or is wiped off it’s right back. I tried a razor blade in a few small corner areas that aren’t visible and all that does it scratch the plastic horribly. I’ve also tried plastic razor blades. Anyone have any tips or tricks up their sleeve that could help me with this? Also, if this is the best it’s going to get will it effect the light coming into the tank enough to worry about?