There are four large clay pots and tall plants in the tank. I've also got a few loose leaves floating on the top--though the girls will have plenty of room to breath. The guppies have settled in nicely and today I think I am going to add at least one of the girls. I have a pretty pearl white one with blue eyes that is very mellow and I think she will be okay.
I took the girls out originally because one of the fake plants actually had wire (that I didn't even know about) and it was started to rust! Yikes! Rust! I thought it was only a few decorations that contained rust, but apparently there are several. I took out those plants though, performed a 25% change with a gravel vaccuum, and replaced it with real plants.