Thanks everyone for the wonderful comments.

Keep the feedback coming, I love reading what others think.
Just so everyone knows, that is a 20 gallon tank that has been split into 3 sectioins with two tank dividers. There are 3 bettas in there, but of course you only see two. The one on the far left (with the hollow log/rock thing) is hiding inside of the ornament. He loves swimming in and around it.
I was hesitant about putting in the hollow log thing but I needed something to block the current coming out of my whisper internal power filter. Leaning this log on its side has helped tremendously and my betta has a much easier time swimming around.
I added the purplish plant to make it look pretty.
The middle sectioin has a heater (which looks crooked because one of the suction cups fell off and isn't re-attachable).
The last section has a pump with an air hose attached to an air stone (this is set very low).
The pink plant and green ones are glow in the dark, which is cool. The blue one glows in the dark too. Unfortunately only two of them glow in the dark now, not quite sure why.
But I've bought some other brightly colored plants to match the rest.
The gravel is made up of black, and 2 or 3 shades of turquoise all mixed together.