Not sure how to describe this nearly as well as I can picture it but I'd put a 2x4 on it's side so it's narrow side is under the top of the stand, drive a screw through the center, and then put a screw on each end. Use 2x4s again on the ends as upright posts and I think that would be more than strong enough, I used 1x3s for my 60 gallon but doubled them up.
Doug
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