While I am a bit more freshwater these days and did the saltwater thing in the past and will again after I move, I'm not totally up to date with the cost of setting up a new aquarium these days. A friend asked me and I suggested a nano if he was tight on space and primarily corals with only shrimp or a handful of very small fish, at most. I was thinking neons or firefish, something like that. He's looking at larger than the small 8 gallons but probably no larger than around 20 gallons. There are some JBJ tanks and others from the nano tank specialists and I was wondering if I could give him a ballpark figure of what to expect to build.