Ever since I moved here and experienced my first earthquake (a paltry 3.2), I've been wondering what precautions people have taken on securing large tanks. A 100 gallon tank weighs at least 1000lbs, enough to instantly kill anything it falls on. On the usual stand 30-36" high, that is a lot of potential energy wanting to obey gravity. Now, I don't have any small children or pets to worry about, but I can imagine that the last thing someone wants is to have their tank knocked over by a quake and seriously harming someone or something. Not to mention the damage to the tank and property from all that water! Do any of you install some sort of structure to make sure something like this doesn't happen?