I have a 120 AGA RR. I have about a 40 gallon sump, so Im guessing about 160 total water minus rock and sand, with a third of the sump being a refugium. I run 3 AI Sol Blues (I need a 4th). I run a Eheim 1242 for return and 2 Ecotech MP40W ES' for flow. I have a Geo calcium reactor, run GFO, do weekly water changes w/ Aquavitro Salinity, and have a Bubbleking 180 Gen2 skimmer. I think that's about everything. Oh yah, good luck to all....... You're gonna need it. I'm gonna put the LED debate to rest. My frag looks to be a bit larger that most I've seen on here. It's right around 14 or 15 MM. I'll let you guys decide:)