Review on Enhance Your Aquatic World with our 15-Inch LED Aquarium Light - Submersible White Crystal Glass Lights for Vibrant Underwater Illumination! by Heidi Nelson

Having bought a few of these I can say that failure over time is almost inevitable. I failed five of them and all for the same reason. The plug that connects the transformer to the lamp's power cord failed in all cases. Many times the connection was visibly weakened as the light went through a period of flickering before completely disconnecting. If there was a way to re-tighten the connector the light could be fixed, but there doesn't seem to be a way.