The second point is the withdrawal Befestigung.Ein suction holder is too little ... Just in plastic tubs to a sucker solves quite fast ... too bad, a few more cents and a second sucker would have prevented the deduction of points.
Although three stars are not much and act as a deterrent, I would like to recommend the sucker for small glass aquariums. He is reliable, because the items are neatly matched to each other and the two cartridges afford tidy filter surface.
