I can assure you that if the tank were to move at all causing it to fall into the stand the tank would be the least of your worries. In that case you had better wory about your own safety because the whole house would most likely moving. I had a stand like that under my 70 for five years and then modified it to fit my 90 for another ten. There truely are no worries (within reason) in a stand built like this.bleedingthought":2o25hlhw said:No plywood there would make me nervous because of the possibility of the tank being knocked over and falling into the stand. 8O![]()