Preuss Pets is the premiere store to visit in Lansing. There are no clubs in the immediate Lansing area, but there is one in Grand Rapids, not far to the west, and several in Detroit area. Several Grand Valley Aquarium Club members travel from the Lansing area.
I'm in the SW corner of Michigan, near Benton Harbor. About 45 minutes north of South Bend, IN. an hour west of Kalamazoo, and about an hour and 15 southwest of Grand Rapids. Lansing is a good 2 hour drive, but when I have some money to spend it is worth the trip to get to Preuss.