Key Features Reliable and powerful aquarium water pumps Adjustable water flow control 300 can be used underwater Suction cups to secure in place 300 LPH (66 GPH) OptiMax Aquarium pumps are a powerful and compact range of pumps from Oase. Ranging from 300 to 5000, these pumps are just want you need for any size aquarium. Each pump is made in a robust and tough casing, able to withstand years of use. The water flow can be easily adjusted to ensure the correct match with the size and occupants of the tank. The OptiMax pumps are perfect for efficient water circulation or for operating an aquarium filter. The 300 and 500 pumps are small and compact and can be easy to conceal while in the tank. The flow control is located at the front for easy access, and the base has 2 suction cups so the pump can be easily secured to a surface. These pumps are only suited for underwater use only. Model : 300 Max Flow Rate : 300 LPH (66 GPH) Max head Height : 0.6m Power Consumption : 5 Watts Set up Type :