Well I removed the silicone from the back. I then got a sheet of glass and stuck it to the back over the crack with a tob of silicone. I then pressed it down firmly and removed extra silicone from the edges. I then left it 3 days and filled the tank with water. It's been 2 days with water in and no leaks.
Thank you to everyone who left advice and helped me fix this problem I wouldn't have been able to do it alone. Thanks again.
Thank you to everyone who left advice and helped me fix this problem I wouldn't have been able to do it alone. Thanks again.
