Originally Posted by Animal-Chin
You can run a sump without drilling your tank so really any tank can have one just like having a canister filter. I wouldn run a tank that large without a skimmer but i guess its possible if you do major waterchanges weekly. You'll see algae issues though for sure...
I can't fit a sump because the tank unit has a cupboard at each end and an open shelf in the middle. There is no way I can fit a sump.
That's what I thought to be honest about the skimmer I just thought it was worth asking the question.