I am in the process of setting up a all in one tank that is going to be my frag/ coral QT tank - not counting the AIO chambers its 10.5" deep, 18.5" wide and 15" tall. I have a custom coral frag rack coming (will arrive tomorrow)
right now I have for it:
Frag rack (hold 100 plus frags)
Aquetto due 2 ATO
Inkbird controller for the heater /heater
ocean revive t247b light (overkill for the tank but will be turned waaaaaay down)
spin-stream nozzle for the return
530GPH mini-wave maker
back chambers - hold the ATO, pump, heater, then one chamber is full of various small live rock rubble and the other chamber has my sachem matrix, carbon and filter floss
going to run bare bottom tank