On most tanks (At least glass ones), the contact point between it and the stand is often just the underside of the bottom trim of tank, in essence just along the rim of the tank. Thus, it doesn't appear to matter much whether the top of your stand is solid or hollow like many factory stands.
On my AGA stand which is hollow through the top and only supports the tank on its edges, that contact point was a bit narrow for my ease of mind, the edge of the stand only about half as wide as the trim on the tank. So I just put a piece of exterior plywood (somewhere around 1/2", can't remember exactly) between the tank and the stand. That way, the entire surface of the trim is at least in contact with something to support it and I can be just a tad less precise with setting the tank on the stand.
I've checked and with 90g of water, about 80 or so lbs of LR, and about 90lbs of sand, there appears to be no compression of the plywood.