Just tried it and it works great. My bed is about 3 inches deep. I only did half of the tank just incase. I'll do the other half tomorrow. I don't think its been setup long enough to get gas pockets but can never be to safe.
I figure the places with plants are safe from gas pockets as they would use up anything around them before they were able to form.
I figure the places with plants are safe from gas pockets as they would use up anything around them before they were able to form.