After a few weeks looking at the tank, I think those clamps that holding the glass bell need to go.
So I went to the Habitat Store again over the weekend and found a "Y" aluminum channel. These channels were use to hang shower doors. I found a piece of those that is 6" long. That is long enough for my application.
I cut the channel into 4 pieces and attach a fabricated aluminum strip for the bracket. The channel slide on the top lip of the jar and the brackets hold the glass bell.
I'll post some pics later.