The Tétra WHISPER AP150 Aquarium Air Pump is designed for deepwater applications in tanks up to 150 gallons. This diaphragm pump is suitable for all water types and does not create noisy vibrations, making it suitable for both fish and aquarium enthusiasts. The new in box (NIB) model is reliable and efficient, making it an essential part of any aquarium setup for maintaining oxygen levels and promoting healthy environments for aquatic animals.