My 135 Gallon cracked last night and I'm wondering if it's possible to repair. The crack is on the back panel near the left end of the tank. The crack runs from the top to the bottom of the tank in an "S" shape. The tank is currently about 25% full, the leak has slowed significantly. I have two questions, can the tank be repaired with silicone or a patch or a combination of both? Secondly, if I can't use that method, how feasible is is it to take the back glass panel off and replace it with a new panel from a glass shop???? This is one of my favorite tanks, just trying to save it. Any advise would be appreciated.