Funny, my girlfriend was also set on an ADF
, took me forever to convince her not to get one. I've had bad luck with panda cories, I had 7 of them in my 29 and they were very shy, hiding all the time. I then lost all 7 of them over the course of 5 days. Probably just me though I've seen tons of people have better luck than me. I believe they like cooler water than your other fish so keep an eye on that. Also check out apistogrammas, they're great fish for a 29.