Thanks for the responses. I'm not sure what Amerlite I have, it is about 12 years old. It failed once before about 8 years into use. This is now the second time. We need to have our pool drained and refilled, so I figured this would be a good time to address the light. The pool company that is doing the draining and cleaning uses the Pentair LED light system. We have a 35,000 gallon diving pool, with darkish pebble sheen, so my wife is concerned that there won't be a "wow" effect with an LED color light. I think we would save about $500 to just replace the existing light (bulb and seal). Does anyone have any experience with this Pentair system and whether it will provide sufficient light? I know this is clearly subjective, but any opinions will be greatly appreciated. Thanks!