Product description Color:Black Betta Falls is contemporary, elegant and uniquely designed to house three separate betta. Its compact curved design and cascading waterfalls add to its stylish statement making it the perfect aquarium for any home or office. Simply add décor such as gravel, rocks, pebbles, colorful gem stones, or small plants to bring your personal touch to life. Betta Falls uses Aqueon Medium Replacement Cartridges. Betta Falls is available in black and white.