You can DIY one pretty easily if you have access to some basic tools and skills. Here's a simple plan using cheap 2x4's, which can then be covered with thin plywood or panel board to make a very nice looking stand, if desired:
This is a repost of my previous calculations. Again, this is not my design but has become connected with my name over the years. The basic principle of the design is two box frames connected by four legs. The upper one supports the tank and transfers the load to the legs. The legs are made of...