May 11, 2017: Koval Inc 129 LED Aquarium Light with Retractable Arms, 36" to 43": I bought one of these about a year ago. The adapter cable had a single pin and was not waterproof. No longer works due to damage to the cable connector. The new one I just received this week has a double rubber bushing connection. Once plugged in, there's a hard plastic cap that screws into a thread on the other section, creating a watertight (or at least very watertight) seal that's only inches from the light. Even if water from the reservoir accidentally spills over it (now stronger cord) it will run down and away from the connection. It's much safer for everyone involved. I think this is the best LED light on the market at this price point and I now fully recommend it!
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