I realize this is a late post and youve likely already purchased a tank, but I'm a big fan of the innovative marine 20 and 25. My 20 gallon all in one (aio) wasbthe easiest thing to maintain. Plus they don't cost an arm and a leg and are easy to look at. If you're looking for something bigger, water box and innovative marine both make good tank kits (sumps included). Personally, I would recommend keeping your first tank under 50 gallons. That's usually the point where prices escalate quickly and tanks require additional equipment. It'll allow you to sort out your level of commitment to the biz. That said, I still highly suggest the innovative marine Nuvo 20.