These are the lights that came with the tank then? If they are you will probably want to upgrade. Depends what you want to do in the long run I guess... if you want to ever have corals you will have to get better lights. If you just want a fish only tank you might be okay but I would still want to get better lights. As far as filtration, yeah, for SW you're going to have to do something.. This is what I would do, this is just one opinion in an ocean full though. I would take the hood off and buy a metal halide light to go over the tank, most of these set ups have legs that rest on the ends of the aquarium so the rest is open and putting the protien skimmer on the back wouldn't be any problem at all then. I would also use live sand and live rock in my tank- then, with this very basic set up you would always be able to, down the road a ways and after you get some experience, be able to add some soft corals and what not to the tank.