20-gallon long glass aquarium, 12"h x 12"d x 30"w, that used to house freshwater fish and live plants. After I sold off the plants and fish, I just let the water evaporate out, and it sat for many years (life happened). So the glass will need to be scrubbed gently with white vinegar, and the tank and gravel rinsed out well. Sits on a black open stand, and has a flat glass hinged top. No light. It has a thick layer of gravel and two decorative rocks. Comes with a heater, filter, and new filter cartridges, but I can't guarantee those will still work. The heater and filter were working when I stopped using them. Free for pickup in Greenbelt, MD, ASAP. Email me at email@example.com.