Welcome to our store! 1. Safe and Durable: This underwater aerator is made of safe and durable plastic with a smooth surface and no sharp edges, so it won't harm your fish's fins. You can use it with confidence. 2. Perfect Fit for Your Fish: This underwater aerator has an air pump interface (air pump sold separately). By connecting an air pump for oxygenation, your fish will love it even more. 3. Versatile: This underwater aerator is suitable for all types of aquariums and can safely hold both freshwater and saltwater. Your freshwater or saltwater fish can enjoy playing in it. 4. Professional Design: This underwater aerator requires an air pump (sold separately), a 3/16-inch hose (sold separately), and an air valve (sold separately) to control the airflow at the top. 5. Exquisite Decoration: The Bubble Flow decoration is the perfect choice for your aquarium setup. Your fish will thank you for adding these beautiful decorations to your aquarium. Product Type: Inflatable Bubble Flow Aquarium Decoration Material: Plastic 1 x Inflatable Bubble Flow Aquarium Decoration Customer first is our motto. If you find any problems after receiving the product, such as damage or incorrect quantity, please contact us immediately. We will wholeheartedly provide you with the best possible customer service.