Greenwich Ornamental Stone Natural Driftwood - 4 Piece Assortment Assortment includes 2 Natural Driftwood Branches + 2 other-shaped pieces of Sandblast cleaned or natural state clean Driftwood. Suitable sizes to fit inside a 10 Gallon Aquarium in a Natural arrangement of your design. Each piece of Driftwood is Naturally Unique - The pieces you receive will not be exactly as pictured. Natural Driftwood is not only decorative, it also provides natural hiding places which helps reduce your pet's stress in a captive environment. If placed in a freshwater aquarium, Driftwood will float unless weighted down until pieces become completely water-logged.