Ah, this tank is a piece of ****. I am going to consider a terrarium or reptile. Probably a reptile that will be OK with a vitamin D supplement and won't need any special lighting because a good light is out of my budget now.
A riparium/paludarium with frogs would be sweet. The leak is a few inches up. I took out 5 gallons and it stopped leaking but I realized that one of the pieces of glass is mis-cut. Should have paid closer attention and told the guy I didn't want to buy it. Too late now.
This officially concludes ChicoRaton's 20g aquarium log. I may post pictures of my apisto in another thread. She is currently living in the 10g.
Beware of tanks manufactured by amateurs.