A vertical pipe has an upper end and a lower end. The vertical pipe is adapted to be coupled to a pool water outlet. A T-coupler has horizontal first and second legs and a downward extending vertical third leg receiving the T-coupler. Transparent first and second sleeves are attached to the first leg and second legs. Each sleeve has an end cap. An inner cylinder is provided within the second sleeve. The inner cylinder has closed and open ends. A power cylinder is provided within the first sleeve. A gasket hydraulically seals the first sleeve from the second sleeve and the T-coupler. A light source is coupled to the power cylinder extending into the T-coupler. Apertures are provided in the second sleeve. The apertures face upwardly and outwardly.