Best pond vacuum cleaner works precisely just as household cleaners work. Reliant on which model you are using the suction could be created by them through a pump. It works very much the same as the water pump related to your seafood pond filtration system. But on a very much smaller scale, smaller models created for shallow fish ponds might create the suction by means of a hosepipe being attached. And as the drinking water flows through the vacuum it sucks up the particles as well also.