Hey guys, so I have a shoot that requires a shot at the bottom of the ocean. I wont have access to a tank but I may have access to an aquarium (a very big one lol) I can easily make it pass for ocean. however! ive never shot similar and im wondering what lighting ill need to replicate a bit of sun coming through the water in the lower angle shots. the aquarium is 11m deep. Is there a rule for falloff in water?