No, it is neither drill nor has a overflow. It is not reef ready. I was just wondering if it is necessary to have a sump, I heard the water change is made easier with a sump and would like to have that but I don't know if that is a good enough reason to go out and spend about 200 bucks just on a sump.
Right now, I just have 2 powerheads, a aqua C protein skimmer and about 30lbs of live rock in my tank.