new tank..good?

[Bartman]

I posted some pics of my BP eating a little while ago and some told me to take the pieces of aquarium gravel i through in (came in the box i got him in..from the show) because it was a very bad idea. So i decided to just redo his whole tank because it was looking kinda bland. What do you guys think, is it ok?

before

after


thanks 4 lookin..any insight would be appriciated..btw when do you need to take a bp out of a 15 gallon..how long around, until its to small?