I got a 24 Nano Cube, the 2006 model and I just set up a Finnex 20 Gallon. I like the Nano cube, but they could have done a little better on the lighting and pumps. I replaced the pump with a larger one and I put a finnex 18" MH light with PC on it. I am running the Finnex with only 75 watt Mh. But it is just cylcing now. I will buy a Large MH later when I start to stock it. I do like the Finnex size. It is long and a little taller than the cube. More scenery when done with it.....