heres under my tank
i have a 180 and the bottom of the tank looks like this lol
i run an ASM-G4 skimmer
i have my pan world 100p-x return pump
i have my Sequence Dart behind the sump that powers my OM4 way on a closed loop
i have my MRC-CR2 CA reactor
i have a turbo twist UV
and just some random ballast and timers thats about it