I currently have a packed 29 gallon biocube I set up a year and half ago and want to upgrade. 10 years ago I worked at a saltwater store and had multiple tanks set up including a 135 gallon which I still have in the basement. Before taking the 135 down I was pretty neglectful to the tank....fed the fish and added top off but that was pretty much it. I just got sick of it. Went a few years with no tank at all then started to miss it. Anyway I didn't want all the cost and maintenance with the 135 so I just set up the 29 gallon with a AI Prime HD. Now, as I said I want to upgrade but feel like getting something 40-50 gallons instead of setting up the old tank because I don't want to deal with the cost of all that lighting and all the maintenance. 40-50 gallons just seems more manageable but it kind of seems like a waste of money because I'll have to buy a new tank because I don't have one that size laying around. My wife says I should just set up the big tank again because it's already here. Anyway I was just looking to get some opinions. Sorry this was terribly written.