scout
New Member
I have been in the hobby for about two years and have two biocubes, a 29 and an 8 gallon. The 29 has metal halide lighting with a pretty wide assortment of coral including a little sps. I want something bigger(like everyone else) and was looking at the 120 gallon(four foot long) for a mixed reef tank. I have seen joncat's tank and it looks great. But I was wondering what are the downsides to a 120 versus the 125? I guess the depth might require higher intensity light, and it is not a six foot tank more suitable for tangs but what else is there that would be a disadvantage versus a longer tank with similar volume? Would I be better off with the 125 or 150?