HSH-Flo Submersible, Aquaponics/Hydroponics/Fountain/Pond/Aquarium Pump - 5' Cord Extremely quiet operation Suction cups to fit any aquariums Long lasting wear proof stainless steel shaft Suitable for fresh and sea water aquarium this product is installed thermal protection, when the motor is overheating because of abnormal operation , the motor will automatically cut off the power