Check the listing for details. VIVOSUN 15-55W Commercial Air Pump 317GPH-1427GPH for Aquarium Hydroponic System. Color: Silver, Condition: New. Listed at 29.99 USD. About 15W Air-pump 317GPH Premium Materials: This pump dissipates heat more effectively with aluminum alloy heat-radiating plates and delivers excellent, long-lasting performance; includes a premium manifold and pure copper outlet nozzle Powerful Airflow: Vivosun's 15W electromagnetic motor delivers exceptional air pressure up to 0.02 MPa and a high volume of air through 6 adjustable valve outlets, compatible with 1/4" airlines Continuous Operation: Innovative material engineering on the steel engine column and piston makes this pump highly energy-efficient and durable, allowing for 24/7 operation Quiet Operation: Oil-free lubrication and low noise (under 60 dB), makes it an ideal choice for peaceful oxygenation in aquariums and hydroponic systems Wide Applications: This commercial air pump is ideal for the oxygenation of aquariums, ponds, hydroponics, fish farms, and seafood restaurants About 25W Air-pump 634GPH Premium Materials: This pump dissipates heat more effectively with aluminum alloy heat-radiating plates and delivers excellent, long-lasting performance; includes a premium manifold and pure copper outlet nozzle Powerful Airflow: Vivosun's 25W electromagnetic motor delivers exceptional air pressure up to 0.03 MPa and a high volume of air through 6 adjustable valve outlets, compatible with 1/4" airlines Continuous Operation: Innovative material engineering on the steel engine column and piston makes this pump highly energy-efficient and durable, allowing for 24/7 operation Quiet Operation: Oil-free lubrication and low noise (under 60 dB), makes it an ideal choice for peaceful oxygenation in aquariums and hydroponic systems Wide Applications: This commercial air pump is ideal for the oxygenation of aquariums, ponds, hydroponics, fish farms, and seafood restaurants About 40W Air-pump 1110 GPH Premium Materials: This pump dissipates heat more effectively with aluminum alloy heat-radiating plates and delivers excellent, long-lasting performance; includes a premium manifold and pure copper outlet nozzle Powerful Airflow: Vivosun's 40W electromagnetic motor delivers exceptional air pressure up to 0.03 MPa and a high volume of air through 8 adjustable valve outlets, compatible with 1/4" airlines Continuous Operation: Innovative material engineering on the steel engine column and piston makes this pump highly energy-efficient and durable, allowing for 24/7 operation Quiet Operation: Oil-free lubrication and low noise (under 60 dB), makes it an ideal choice for peaceful oxygenation in aquariums and hydroponic systems Wide Applications: This commercial air pump is ideal for the oxygenation of aquariums, ponds, hydroponics, fish farms, and seafood restaurants About 55W Air-pump 1427 GPH Premium Materials: This pump dissipates heat more effectively with aluminum alloy heat-radiating plates and delivers excellent, long-lasting performance; includes a premium manifold and pure copper outlet nozzle Powerful Airflow: Vivosun's 55W electromagnetic motor delivers exceptional air pressure up to 0.035 MPa and a high volume of air through 12 adjustable valve outlets, compatible with 1/4" airlines Continuous Operation: Innovative material engineering on the steel engine column and piston makes this pump highly energy-efficient and durable, allowing for 24/7 operation Quiet Operation: Oil-free lubrication and low noise (under 60 dB), makes it an ideal choice for peaceful oxygenation in aquariums and hydroponic systems Wide Applications: This commercial air pump is ideal for the oxygenation of aquariums, ponds, hydroponics, fish farms, and seafood restaurants