An illuminated aerating nozzle for aquariums. Equipped with a round air stone that releases tiny air bubbles. Delivered with three sets of coloured onlays in red, blue, or green. When the colour onlays are used, the air bubbles released from the diffuser assume an intense colour selected by the user, which creates a subtle yet clearly visible illumination inside the tank. As an accessory gadget, we supply artificial rocks made of plastic that imitate the shape and colour of volcanic cones.