I'm have a Florida room in my house I want to put a larger tank in. I've been looking around and the 220g looks to be the size I want to go with. On craigslist there are random deals for other sizes.. 250g, and I think I can wheel n deal at one of my LFS to buy their 300gal set up. Are there positives or negatives you all know of to put me towards the right size tank? I have decent budget going into this, but don't want to blow the roof off of it. Thanks for any advice for me taking this leap.