I’m sure it’s been done before, but I’m wanting to do a larger reef tank in the 180 gallon range but I’m torn between doing a normal drilled tank with sump or building it as an all in one. Has anyone done this on this large of a scale? Aside from the obvious lack of place for a skimmer, what other issues would an all in one have? I’ve run plenty of reefs without skimmers, so that part doesn’t worry me too much. My main concern with a sump is noise, and then the fact that equipment (and tank itself) will be more expensive. Does building an AIO from a standard 180 offset the extra cost of a drilled tank with overflows and buying sump/return pumps, etc?