I was, say, unlike other reviewers, supplied by 'zooprofi' a unit with Euro plug.
However, the upper suction cup The lower suction cup is movable, not: For 6 Gallons Fluval Edge is the attachment of the heating but not optimal. The Edge is regularly filled to 5 mm above the cover plate. The heater is useful mounted parallel to the intake manifold of the filter under the filter outlet. The cable is then carried out laterally into the filter suspension. The upper suction cup can be attached only under the silicone adhesive of the cover plate. Thus, the heating element is 1 cm lower than would be reasonable possible. Below he is either in the base (resulting in at least Glasheizstäben easy to burst), or basic surface must be kept thinner than a thumb's width. Or the rod can not be vertical, what its design although well accepted, but this does not look good. For a star deduction.