Whats it made out of?? Those legs look skinny. It could hold, but for how long? Some of these stands you have to worry about them holding for the long run.
^ this is 100% true... That stand can handle more than just whats in the pic. The legs spread outward so another tank can be placed on the bottom like Bderick67 says above. Get one, they make great use of the space / gallons. I have used the 55g version as well and liked it.
You guys hollered at me alot in this thread. I will get a 20L for the bottom...great idea. They are sold with the intention of holding a tank full of water.