My opinion, if you go it an Nano your going to have to Mod it. I think its better to just go with a drilled Oceanic 30 cube with a sump and remora skimmer. This way its easier to up grade the lighting when or if you what to go SPS. On the other hand you could do the same with a nano with a clip on MH maybe a 150 14K, but you lose the sump. I would never run a reef sumpless, maybe a fish only, everything i have seen points to SUMP. Its a little more $ but keeps things easy to keep up with. Do your homework, you will figure it out. picking out the tank is the easy part, just wait till you stock the tank lol. hope this helps bro.