Hello John.

The cage looks interesting. and I really like the benjamin ficus leaves your using they do last for a while. How many bags do you think you need? I have used at least 4 full hefty construction bags to fill a 75 gallon tank!

Good luck with the cummingi.

PS. there is a golf course in Miami Shores that has 4 ficus trees and they haven't bothered to stop me yet.