I believe it is around a 35 gallon cube. Measures roughly 20.5" w/l/h. It is reef ready and comes with plumbing, and a black stand.I just used a ten gal as sump, that you can have. I also have a mag 4 return pump for a extra 40. Can throw in some live rock. And a sca skimmer that needs an impeller if you buy the rest. Will also have a ocean revive t247 for sale when I get new lights for my tank. Looking to buy some kessil 360's.$100 for tank stand plumbing and sump. And 40 for skimmer and return. Call or text 330-687-8864 for pics and questions.