Sorry for the delay. Tank in cycling so I kinda ignored this thread.
The sump has a clean build to it. It comes stock with three 1” bulkheads but also a blank plate for you to drill whatever you need.
The fuge area is huge. I mean just freakin mammoth.
The skimmer section is a little narrow. I bought a Nyos Quantum 160 and I have plenty of room for it but I’m not sure I could go up one size. Make sure you take a look at that.
The return section is pretty small. Return pump, atk and my heater, Finnex 800, are all I have in there. The heater sits at a bit of an angle but I think it’s ok. Certainly better than two of any other heater.
The baffles are easily adjustable. You can set your fuge, skimmer height and return at all different levels. Currently my skimmer and return compartments are the same to minimize noise and splash.
So far I’m perfectly happy with it.