The Uniclife Aquarium Large Betta Log Resin Hollow Tree Trunk Decor Artificial Wood Fish House Cave Bark Ornament with Hideout Holes for Shrimp Small Cichlid Lizard and Turtle is a great addition to any aquarium. Made of high-quality resin, this ornament is perfect for decorating your fish tank or large fish bowl. The flat bottom makes it stand steadily in your aquarium, and the sandpaper helps smooth the edges and soak the decoration for at least 24 hours in the sink.