The lid for my Great Basin gopher snake's tank is weighted with four 46 oz. pickle jars of water. The tank is on a desk in our living room. The tank measures 4 feet long, 13 inches front to back, and 20 inches tall (outside dimensions); would this be a 55 gallon?

Prettier weights could probably be developed using vases filled with sand, gravel, BBs, shot, etc.

I also use water filled jars to weight down the tops of my rat cages.