DESCRIZIONE
A sterilizer (10) for water, with pump, particularly for aquariums, comprising - at least one element (11) for irradiation of ultraviolet rays, - and at least one duct portion (12) for the passage of the water to be sterilized, which faces the irradiation element (11), the duct portion (12) being permeable to ultraviolet radiation irradiated during use by the irradiation element (11), - a pump (13) for supplying water to the duct portion (12), - a structure (14) for hanging from a rim (15) of a wall of a tank, which has a first supporting portion (16) for the intake (13a) of the pump (13) and a second supporting portion (17) for the irradiation element (11) and for the duct portion (12) that faces it.