Please help me with cracking tank

[deranged chipmunk]

You could use a high temp soldering iron to melt the plastic frame flush so that you can remove the glass. If you still have the old tank that cracked, you could do the same and use the good pane of glass as a replacement. Another option would be removing the good pane from the old tank and siliconing it on top as brian suggested. Ugly, but effective. Home depot also sells those diy screen fame kits. All you need is a hacksaw, time and determination. I have used those kits in my house several times. They work really well.

[Kellbri]

My husband is thinking that we could use a dremel tool and cut the glass out and put a screen on the top. As far as the screen strength i'm not to worried about that my cat doesn't care about the frogs and my shorthair gaurds the tanks, he loves the frog. It's really funny cause he sits in front of the tank and wines when she is active until i bring her out for him to look at.