I have a 2' tall 44 gallon aquarium that I want to keep a bimac or an aculeatus in. I have read here that bimacs require 50 gallon tanks, so I am unsure of this. I will not get it now, only in 6+ months until I become more comfortable with reefs. A bimac would be preferable, as they can be CB, and getting an aculeatus from liveaquaria.com is 50/50. However, I will settle for an aculeatus if the bimac is impossible. The tank has a 10 gallon sump with 6 gallons of water in it, for a total water volume of 50 gallons. I have a 250 watt heater in the main aquarium, but it can be moved. I have a 100 gallon Seaclone protein skimmer, i live in a 60 gallon Whisper filter, and two 480 gph circulation pumps, plus two DIY cooling fans for the summer (I live in CA). I can add more fans if needed. So, bimac, aculeatus or mercatoris? I would prefer to avoid mercs if possible because I have a bedtime of 9:00 and will have to wake up again to see it.