i havea 29 gallon and yes i wish to have a bigger tank soon but its so pricy. i think you should get a different filter like a bacpac or something like that so you will bab able to get more stuff. i have a BacPac and i am planning on having like 6 fish and tons of corals. Right now in my tank i have:
Fish:
Purple Firefish
Corals:
Xenia
Frauspawn
Button polyps
about 10 assored muchrooms
and somethin else but i forgot what it was called.
i also have 250 watts on my tank. 175 watt metal halide 2 28 watt atninc and 2 9 watt red flourecents.i will try to get a pic of my tank to show you.
good luck
ALEX