I have been running the corallife retrofit kit from rapid led, 12 CW and 12 RB. I am upgrading them to the dimmable drivers and adding another driver to run the color leds. so after I will have 12 RB 12 CW 4 UV 1 green 1 Red The uv green and red will be on its own driver. Im thinking on taking out 4 CWs (to make room) for the colors or drill the heatsink and keep all. still trying to come up with a layout plan on the colors, right now I have then configured: 1 row CW 2nd row RB 3rd row Cw 4th row RB Does anyone have any thoughts or suggestions? Would also like to give a shout out to Rapid Led There staff and customer service is Awesome!