3 within one structure, it is able to be put to use as a filtering system, a oxygenation pump and are able to be implemented for water circulation.High effective & energy saving, great that will boost water quality in order to preserve the aquarium of yours in optimal condition.Waterfall wetness flowing structure, ultra peace and quiet working.For the very first time use, needed put in that consists of water next it is able to work.For sort 2/3/4/5/6, it's with crude oil removing membrane processor, that might adsorb unneeded oil coming from the exterior of water.Adjustable distance in between the air filter together with the fish tank, along with changeable h2o moving through the adjustment controller.Once power off, you could reactivate it without incorporating water again.Easy to put in, in addition uncomplicated to maintain.There are several styles designed for the choice of yours.