Color:Black Easy to install: 1. Connect air stone to air tube. 2. Connect air tube to air pump outlet. 3. Stick sucker onto reverse side of pump. Attach air pump onto outside wall of aquarium tank, but locate the pump above water level to avoid any possible water counter flow. 4. Immerse air stone into aquarium tank. In case of the air tube is too long, cut out a section based on required length. 5. Connect power adapter to electricity socket, then air pump works. Note: - In order to get optimum working effect, please use original accessories. - The air pump is Non-waterproof, keep it away from water. - Regularly check the air tube is not being clogged, bended and without any air leakage. - Do not put the air pump too low, you show hand it on the tank. Specification: 1. Power supply:220V 2. Power: 1 W 3. Flow rate: 0.45L/min 4. Tank volume: 200L(30gal) 5. Frequence: <50Hz 6. Noise:≦35db 7. Pressure: 12Kpa 8. Air Tube Lengh:1M 9. Power Adaptor Cable Lengh: 1M Package Including: 1pc * Aquarium Air Pump with Sucker 1pc * Air Tube 1pc * Air Stone 1pc * User Manual Money back guarantee: if you do not satisfied with our aquarium air pump, contact us for refund or resend.