No foam under bottom?

[Black Phantom]

The foam certainly helps if your stand has a few bumps but if your dealing with a flat surface then you should be ok. My six year old 250 is just sitting on plywood and between the water, 300 lbs of live rock and 300+ lbs of sand I don't think that a bit of foam is going to do much.
Just my opinion of course

[Slick Fork]

Does the trim raise the bottom glass off of the desk surface? If so, then I wouldn't put any foam under there. You could put even a slice of carpet underlay beneath it. It would be much less obtrusive and give you some "padding"

[spreerider]

i have never used foam and neither has anyone i know, and i have never had a problem.

[justinl]

I usually encourage people to use a foam underlay to deal with minor bumps you can't necessarily see with the naked eye, but for a 14g on a desk, just go for it. If it were a 140g, then that would be a much different story.