I used to have one, but more fish died in the quarantine than my main tank (water toxin), so after I cleaned it out I just took it down. If you want to use the quarantine for a hospital tank as well then you don't use any LR or LS, well you could use some LS but the medications would kill it. Anyway my basic setup had no LR or LS, just a hang on filter (also the tank size was a 26 gallon), pieces of lava rock for the fish, a lot of people have PVC pipe too and they paint the bottom of the tank so there is no reflection. Thats pretty much all there is to setting up one, pretty easy.