small reef,
As a fellow former grad student in a similar field, allow me to ask where you went to school, exactly? I studied under Drs. David Pawson and Diana Lipscomb, myself. Kudos, BTW, for finishing so quickly.
I don't believe I could find many marine scientists who would say it is fine to keep a tang confined in that size tank for any period of time.
I certainly wouldn't.
Ryebread, 'nother fantastic shot. I'm still working on the "map!"