Looking to get a bigger tank. Currently have an Oceanic Illuminata 57g tank and looking to go to either a 75g or 90g....I would love to go bigger but im on the 3rd floor of my condo and even a 90g is on the edge of my comfort level. I plan on building my own stand and plan to make it have a larger foot print then the tank to help spread the weight out..im looking at a predrilled aqueon tank and looking at the specs the difference between a 90 and 75 dimensionally is in the height,90 is about 4inches (or there about taller). both tanks are 48'' long and 18'' wide, which are both a foot longer then my current tank. I just dont know if a 57 to75 would be that much of a change to make it worth the hassle of swapping which is why Im leaning towards the 90g.Thoughts and oppinions appreciated.