How far "out" is Too far out?

[Aquattro]

My stand, 2x4, is unlevel on all 4 sides, almost to 1/2". I shimmed it wherever it needed, and it's been fine for a year. All points do not need to contact the floor, really, only the corners need to be level, and depending on construction desin/material, maybe the centers.

[Keri]

Well that's promising! The glass is quite thick, like 1/2"

[ReefJunkie]

Shim away Keri! I like to use cedar shingles for more coverage.

[Keri]

....yay! Perfect.

(or should I say....Shimsational! *grin*)