Hexagonal shape: see from any angle3-way all-in-one Bio-Fil filter Lighter, brighter, safer, and stronger than glass Choose clear, blue, or black acrylic Available in a variety of sizes Submerged filters run silently For fresh or salt water fish. With the stunning Uniquarium Hexagon Aquarium, you can admire your brilliant fish from any angle with dazzling clarity. It comes with everything you need for fresh or salt water fish: high-capacity Bio-Fil filter, Rio high-flow powerhead and more, maintaining perfect environmental balance with no ugly tubes, pumps, or hoses. Choose your favorite size and tint. Just add water. Size: 55-Gal (25W x 24H in.). Color: Black.