One of the key features of this aquarium oxygen pump is its oxygenating head. This head effectively increases the oxygen content in the water, ensuring that your fish have a healthy and thriving environment. Additionally, the nano bubble stone produces tiny bubbles that help to dissolve oxygen into the water, further improving the quality of the water. Features -Color:Sky-blue -Material:Acrylic -Size:8.50X7.00X6.70cm/3.34X2.75X2.63in -The fish tank oxygen pump air diffuser features a sleek design for a modern and stylish appearance. -Made from acrylic material, this product is highly durable and easy to clean, ensuring use. -With its quiet operation, this oxygen pump creates a peaceful and tranquil environment for your fish. -The oxygenating head of this product promotes the health of your fish by providing them with a constant supply of oxygen. -Equipped with a nano bubble stone, this oxygen pump enhances oxygenation in the fish tank, creating a healthier and more oxygen-rich environment for your aquatic pets. Package list: 3 Tank 3 x control valve