Introducing the biOrb Classic 15 Aquarium—a 4-gallon black acrylic tank that combines elegance with functionality. Its minimalist design offers a 360-degree view, making it a captivating addition to any office, apartment, home, or desk. Constructed from durable acrylic, it’s 10 times stronger and 23% clearer than glass, ensuring longevity and crystal-clear visibility. This all-in-one setup includes a standard white LED light, a quiet air pump, a low-voltage 12V transformer, a filter cartridge, ceramic media, and water treatments—providing everything you need to establish a thriving aquatic environment. The 5-step filtration system ensures clear, healthy water through biological, mechanical, and chemical filtration, water stabilization, and oxygenation. The compact size of the biOrb Classic 15 makes it ideal for desktops or tabletops, adding a touch of tranquility to any space. Its user-friendly design ensures quick and easy setup, allowing you to enjoy the beauty of your aquatic life with minimal effort. Please note, this aquarium is pre-owned but remains in excellent condition, ready to enhance your space with its serene presence.