An aquarium illumination device (610) for providing illumination to a body of water, said aquarium device (610) comprising an enclosed housing (615) having an inlet port for introduction of air into the housing from an air pump, an outlet port for exit of said air from the housing, and a light emission assembly (612) for providing illumination to the body of water disposed within said housing wherein the air pump delivers air into the enclosed housing (615) of the aquarium illumination device (610) so as to maintain the light emission assembly (612) at an operable temperature, and the enclosed housing (615) prevents ingress of humidity into the housing and exposure of the light emission assembly (612) thereto.