bubbler just works w/ an air pump and air stone, real easy. i didnt get it at first , then i read up a lil and its sooo simple. if the water is just below ur net pots or wutever medium u cut in2 the lid, it'll mist ur stem with hightly oxygenated water. thatlls all , bubbles do that. no real water pump. ill let u know if it works for me.