These internal filters have specifically been designed for easy handling for all aquariums 30-60L The 2008 filter is equipped with an integrated air diffuser. When oxygen is required, simply push in the output nozzle and a continuous burst of bubbles is released into the aquarium. this eliminates the need for an extra air pump. A feature of these filters is the pick-up system with the quick clean canister containing the foam insert and impeller. During cleaning, the electrical cable and motor remain in place. All you have to do is pull out the filter canister, rinse the foam insert and impeller in old tank water, then replace the canister. For tank size up to 30 - 60l Pump output 150-300l/h