I have or rather had a set of Key K3 LED lights that have just died rather spectacularly. The control unit gave an almighty bang then nothing. A real concern as I have corals on the tank. The only immediate solution is to buy a fluval led from my local shop which would not be my choice of light. I have the original freshwater lights (I think). I could put done fluorescents in but not sure. Any guidance on this would be appreciated as I don't want to lose corals that are well established Help!