Powerful pump, but also very impressive. Attention to the size of the compartments in special aquarium furniture! In the mine, she did not come home yet my compartment is large ... Very simple installation. Perfect ignition. During the first hours there is a water flow noise ... Do not panic! This is just the time the system is emptied of its air ... Once the exhaust air, almost no noise! For use with filter media, but when used with pozzolan and Japanese carpet, the result is perfect! I recommend.