This is more of a heads up for Tao tronics Owner's than a Oh crap what to do situation.. Came home yesturday from working noticed my tank was cycling off early.. I started looknig around all Wires plugged in and Reef controller still is set properly for time of day And so on.... Removed unit off tank then started trouble shooting. After pulling it apart and verifiing both led driver's are working found out something with-in the white led's on the heat sinc is the issue.. I have tried to contact Tao tronics to see how they can make good of the warranty so now is the waiting game.. So my tank has lighting again, I am using my old 150 watt HQI 15K.. After doing a test run with that light .. I REALLY need my Led's working again.. lol the HQI doesn't put out near the light the Led's do.. Again just a Heads up.. Hope no one else has issues..!! Happy Reefing..!!