I have done some time lapse work w my D200 and aquatica housing. I use a small plastic velbon DF-10ML tripod. The aquatica housing has 2 tripod size holes on the bottom, oddly both spaced just off-center near the front of the housing.
I can screw the small baseplate in just barely missing the little rubber feet. This does not work when just the 8" dome is attached as the port gets in the way of the baseplate attaching. You need a setup with a port extension. It would not be difficult to fabricate a little bar that screwed into the two holes and protruded beneath the housing to resolve this.
Aquatica has announced a tripod mount setup in the works, though Jean said its taking a back seat to all the new housings they're working on (40D, D300, D3, 1DsMKIII). This upcomming setup, plus the soon to ship remote release & potential D200->D300 retrofit makes me glad i have an aquatica. Cheers,
Chris
p.s. turn image review off for time lapse as it will drain your batteries. i picked my camera up after a 2 hr time lapse on the second dive only to be surrounded by a school of groupers and a dead battery. almost spat out my reg i was swearing so much.