Feature: 1. Using acrylic brackets, crystal clear and beautify the fish tank. 2. Nano‑ceramic chips have a better effect of refining the air in the water. 3. Two standard suction cups, one fine‑tuning valve, and the oxygen augmentation tube is connected to adjust the desired effect. 4. Aquarium aeration pump accessories, can oxygenate the living body for better performance. 5. Fine workmanship, enough oxygen, fish can grow faster and more energetic. Specification: Condition: 100% brand new Item Type: Fish tank bubbler Material: Acrylic + nano ceramic sheet Color: As pictures shown Product Usage: Aquarium aeration pump accessories, refine the air in the water, and oxygenate the living body KCXH-35 (Medium Size): Main Bubble Tray: Diameter: 3.5cm, Height: 7cm GWXH-50 (Large Size): Main Bubble Tray: Diameter: 5.5cm, Height: 7cm BSFH-028-1 (Mini Size): Main Bubble Tray: Diameter: 1.2cm, Height: 7cm. Package List: 1 x Bubble Tray1 x Fixed Suction Cup1 x Opening Clip1 x Two Way Adjusting Valve Note: Please soak this product in the fish tank for 30 minutes before use, to have better effect.