Introducing the Neptune DOS Quiet Drive Dosing Pump, the upgraded version of the best-selling dosing pump renowned for its efficiency and now, its enhanced quiet operation. Experience a remarkable improvement in noise reduction, with a 1.5 times quieter performance at slow speeds (4 dB) and over 4 times quieter at high speeds (13 dB). Operating within the quiet zone (less than 38 dB), it offers continuous duty, ensuring a tranquil environment for your aquatic setup. Equipped with two variable motors operating between 33-49 dB, this dosing pump features six speed settings and large diameter tubing, catering to diverse applications such as additive dosing, water changes, and liquid food feeding. With compatibility with the Trident and Trident Controlled Dosing systems, along with its seamless integration with an A2 or A3 Series Apex, the Neptune DOS Quiet Drive Dosing Pump guarantees precision and reliability in managing your aquarium's dosing needs. Included in the package are the DŌS QuietDrive Dosing Pump, 1LINK Cable, 4 Meters of 6mm Tubing, and a Graduated Cylinder for Calibration, providing everything you need for seamless setup and operation.