I cleaned the new tank out very thoroughly, cleaned off a bunch of old gravel, and conditioned the new water. Genesis is already in it, and he seemed pretty excited to have so much more space.
I have no idea how much water this tank is. I plan to snag our next empty water jug and use it during his next cleaning.
Even added his little shiny gemrocks that he came with, to make him feel a bit more at home. Next step will be finding the poor guy some plants and a terra cotta pot or coffee mug.
Edit: The bit that looks like.. goopy... stuff and scratches on the tank is all on the outside, by the way. haha
@orphansparrow: I'm starting to think he actually doesn't have finrot. When I got him, his fins were black on the ends, and weren't ragged/torn at all. Same for the next day. And then on Tuesday, they were torn. Wednesday and today, there's been no visible change. I think he might be biting. :c
As for Wal-Mart... well, let's just say where I live, if you want anything fish-related, your only choice is really a store specializing in fish, or a pet store. Our Wal-Marts don't even carry fish tanks or tank decorations. D:
@carzz: I've been watching him pretty closely. The only thing it looks like he may have is finrot, luckily.