At a church I used to play out, the "aquarium" was made up of removable panels. Because I'm a drummer, I'm always on time, so I would take off a couple of panels and put them in front of the guitar amps from time to time. The guitar players never saw it coming because, as eternity has taught us all, they always run late.How about we just put the singer in the fish tank. Then the mic won't get any bleed at all! Yeah, put the obnoxious guy in the box and see how he likes it.