US Patent 9945754 Underwater light leakage detection apparatus

A housing is provided having a leak detection tube in liquid communication with the inside of the housing. The housing is adapted to be affixed to a wall surface of a swimming pool over a suspected leak area below the surface of the water by a lockable connector mounted on the housing. A suitable dye substance then is inserted into the distal top or free end of the leak detection tube while the latter is positioned just below the surface of the swimming pool water by a leak specialist positioned on the deck or beam of the pool. A light fixture may be mounted in the wall surface and the aforementioned leakage test conducted to determine water leaks in the niche containing the light fixture.