if you have the space and the money, don't fart around with a nano cube or weak 20 gallon tall. If you are really into it and love what you see in public aquariums - GO AS BIG AS YOU POSSIBLY CAN. I daily regret not getting the 180 I was looking at when I started 2 years ago. I read about Winyfrog getting her blue-faced angelfish and I cringe, knowing I could have one and a french angel if ONLY I had gone bigger. You need to have limits, obviously. Don't break the bank, but if you are tied between two different size tanks - GET THE BIGGER ONE!!! You won't be disappointed when you see a picture of a Regal Tang and want to keep one for life and realize your 55 gallon is just not going to cut it for more than 2 years. I understand that some people just don't have the money or the space and are doing wonderful things with as large as they can go. Bigger tanks are WAY more forgiving with water parameters as well. Just my :twocents:, but I recently hurt my back and have taken 2 somas and I am not my normal self.....:shock:
Welcome anyway
-Dr Marco :sfish: