dolfans1 wrote:
One possible solution is to cut a piece of plywood or other wood
material to the dimensions of your base, and put this under the castors
so that the weight is evenly distributed on the Pergo. 1/8" thick
plywood should be thick enough and should not be unsightly.

First off, the most commonly sold 1/8" plywood is Luan, which is so soft as to
be useless for this purpose (it can be dented by high heels). I would recommend
pine.

Secondly, and perhaps more important, this would probably defeat the purpose of
putting it on castors, since it would roll off of the plywood shortly after you
began to move the tank. The uneven load would probably scar the floor, might
crack the tank, and you'd have to jack the stand up to get the plywood back
under the castors at the new location.

George Patterson
Why do men's hearts beat faster, knees get weak, throats become dry,
and they think irrationally when a woman wears leather clothing?
Because she smells like a new truck.