I think lighting is making it look more twisted than it is. It's parrallel to the framing 2x4's in the back ground. I think the broom stick is also causing a illusion.
I would still fill it outside and let it sit for a week or two before bringing into the house.
Keep up the good work. Any idea whats going in it?
Still chewing on the stocking questions. All that seems to stay constant is some kinda pleco or catfish. I'd like to go medium sized african community for lots of activity, personality, and color... but having one big centerpiece fish is also an interesting idea.