An underwater light cover kit for use upon a pool underwater light fixture includes a seal ring and an applicator ring. The seal ring has a circular shape having a circular aperture through a middle section thereof and is adapted to be placed upon a pool underwater light fixture having a circular shape. The applicator ring has a circular shape having a circular aperture through a middle section thereof and is adapted to be placed upon the seal ring and used to push the seal ring upon the pool underwater light fixture to deform the seal ring, push out air between the seal ring and the pool underwater light fixture and form the suction connection therebetween. A combination of a pool underwater light fixture and an underwater light cover kit, the combination includes a pool underwater light fixture and an underwater light cover kit.