Hello. Its been a few years since I've had fish. My wonderful husband has just given me the go head for a new tank. I won't be getting it for a few months yet so i'm doing research. I have some questions on selecting the tank it's self. The spot I have picked out I can fit a good sized tank in. My choices are 55, 75,or a 90 gallon tank. I'm guessing we will be happier if we go for the 90 gallon. So my thoughts are that it comes in a tall or long size. What are the pros and cons of each size? I am wanting to do a planted tank if that makes a difference. Also does the bowfront design have any big pros or cons? Thanks!