The most important consideration when choosing an aquarium stand is to get one that will hold the weight of your aquarium when it's filled with water and live rock and corals.

Many people underestimate the weight of their aquarium when its filled up. Water weighs about 8 pounds per gallon. But live rock and live sand obviously has a higher density and thus weighs much more than that. It's very important that you get a stand at either equals or exceeds the capacity of the new aquarium when its filled.

So try to buy one that is already matched by the manufacture to your aquarium, or build one but be sure to over engineer it and make one larger than you think you need. Otherwise you might find yourself with an aquarium laying on the floor and fish flopping around on your carpet, and a wife (or husband) with their hands on their hips looking at you as if you are the BIGGEST KNUCKLEHEAD in the universe!

A second consideration might be to get one that has room underneath to put a sump and other equipment. It will make for a neater appearance overall.