Thanks for the reply. I'm pretty sold on the 30" depth. I like the idea of the extra swimming space that it will provide and still be able to put some nice colonies.
Yeah there is alot of room for swimming, corals and growth with 30". The extra 6" from a 24" tank doesn't seem like it'd make a huge difference 24" is definitely nice but man it is crazy how much more room there really is and the visual difference in person is just amazing! What are the other dimensions your looking at??

