Originally Posted by hackteck
how much bigger is a 75 from a 55 i thought it was only a couple inches taller
If your looking at the all glass aquariums like the ones sold at petco, petsmart etc, a 75 is usually 18 inches wide compared to only 12 inches on a 55. Which does not sound like a huge difference but it is when it comes to aquascaping. It's a pain trying to set up the rock work in a tank that's only 12 inches wide especially when your trying to set it up as a reef tank, I would pick the 75 for that reason alone.