My LFS has a busted 29g on discount. The glass pane on one of its sides has two large cracks in it, and it has been marked down to $20. I have no intention to use this as an aquarium, just as a terrarium or maybe a future paludarium (the cracks are on the upper half of the pane so the bottom might still be watertight). A petco dollar per gallon sale would be more costly. Does this seem worth it?