bare bottom?

[mike31154]

No comment on the BB, but you mention a difference in watts per gallon that you are basing your purchase decision on. What type of lighting are we talking about here for either the aquapod or biocube? If you're going to keep corals you may be well advised to concentrate more on the type of light output rather than watts per gallon. The difference in light output for given watt of the different options (MH, T5HO, PC) is substantial. Watts per gallon alone is no longer a good indicator of what's best for your livestock.