My latest dilemma with my tank is that one of my Evergrow LED units decided to take a dump after about an year of service :-(. Currently I have the 2 evergrow units and 4x54w T5 retrofit lights over my tank. I'm thinking of dumping the 2nd evergrow unit and just order up another 2x54w T5 retrofits in it's place. Would you guys think that will be enough lighting to grow out sps? I don't want to really throw the money on an ATI 8x54w fixture since I just built this canopy and all. I have been reading that a 6x54w ATI sunpower unit is enough to grow sps "from the sand." So I figure the same should apply if I add another 2 bulbs using the retrofit from BRS.