Place the aquarium in a sink or tub for cleaning. The aquarium will need to be at least 20 inches high to accommodate miniature orchids.
Use the scraper to remove any crusted-on algae from the aquarium. Wash the aquarium thoroughly with brushes and hot, soapy water. Dry the tank with paper towels.
Wash the activated carbon with water and use paper towels to dry it. Cover the bottom of the aquarium with the activated carbon to a depth of about 3 inches.
Put the pots with the orchids at the bottom of the aquarium. Pour in the growth medium to fill the area around the pots. Because orchids require a course growth medium, lava rock or bark nuggets work well. Don't get the growth medium in the pots.
Position one of the glow lights at the upper front edge of the aquarium and clamp it on with two of the snap-on clamps. If your glow light has a reflector, aim it toward the bottom of the aquarium. Place the other glow light on the opposite side of the aquarium in the same way.
Plug in the glow lights. Water the plants according to your usual schedule.