You also might like to add lots of plants and some hidey places, as they like to explore
Have some snails on hand too, as they should be fed them once a week to help keep their beaks short. Other than that, live foods are appreciated, also frozen blood worms and brine shrimp.
I saw some DP's in the local lfs and those things are the cutest things to watch, but i heard they are very aggressive and can actually give you a nasty little nip if you put your hand in the tank.