Ah, yes, you caught me. I had vaguely seen the reflection in the picture, but I couldn't distinguish that it was South Park until you mentioned that. Anyway, to answer your question, almost everything in there is real. The only exceptions are three decorations, which by now blend in pretty well with all the plants, rocks and driftwood.
And I have a better picture now. I've put in a lot more plants since the last one. I got away with murder - a big bag of free java lace, including three big potted mother plants, and some hornwort.
And to compare, here's a picture of how it first looked when I brought it home.