I am curious of the bare basics of a hospital tank. I am going to set one up so I can keep my display tank fallow for 4 weeks. I have been battling ich(isn't everyone) my ich magnet(aka regal tang) got ich awhile ago. First little sign I seen I started treating the food with kent garlic. Once it started to worsen I treated with kick-ich (which seemed to work) after awhile my tang got a secondary infection so I had to wait and then change treatments to kill that(I believe the treatment killed my shrimp but my other inverts(hermit crabs, feather duster, corals, ect) are fine so it prob wasn't the reason. Back to the tang, when I swiched meds the ich exploded into a much worse problem. It used to be only a few specks now the fish have twice as many. I am concluding that kich-ich in my experiance only controls ich not eliminates it. So anyways now that the problem is worsening I am going to set up a hospital tank before it is too late. I wanted to know the bare basics of one and if coppersafe will be ok for my regal tang? Does livesand, heater, and filtration sound ok for a hospital tank? or are lights nessesary?