Realistic Design: Made of environmentally friendly PU, PVC, and resin materials, this artificial reef for aquariums features a lifelike design that sways with the water Easy to Use: Simply place this decorative fish tank ornament directly in the tank to create a stunning underwater landscape with sand and plants. Safe for Aquarium Creatures: This reef is specifically designed for aquarium use, ensuring that it does not harm or pollute the aquatic environment or its inhabitants. Biological Attachment Point: Provides a perfect for the attachment of beneficial nitrifying bacteria, promoting a healthy aquatic ecosystem. Diverse Landscape Options: Enhance your aquarium with this versatile ornament, which includes coral, cave, seaweed, shells, and more, creating a natural habitat for fish and turtles.