LOL! consider busting the bottom pane and removing it in sections leaving the sides intact. Silicone a new bottom piece of glass. Sorry if I seem pushy but it's not difficult at all. You will want to do a test fill outside of course . If it drips run a bead of silicone with the tank full of water the water pressue will force the silicone into the leak. Drain the water soon after. Sounds crazy but it works. Today I aquired an old metal frame aquarium with a slate bottom. The two side panes are broken I couldn't pass it up. Now instead of me sitting back,giving you suggestions, I have to repair a tank as well!
