The Aquarium is an hermitcally sealed chamber designed to protect the audience, cast and crew from some of the more noxious noises and odours eminating from "Peasants Under Glass".
It is not true that Joe, the drummer is responsible for the requirement. Joe plays with chopsticks. It IS however true that both Michael and Ian, due to their affinity for BBQ ribs and carbonated beverages, can knock a buzzard off a crap wagon at 500 yards. In the light of the recent lawsuit, the Board requested Scott address this matter. Here is the floorplan of The Aquarium