Everything you need to build a pro like led reef light..comes with ardunio kit
heatsink is 13" x 8 1/2" x 1"
over 30 cree xpe and xpg leds, royal blue , blue ,cool white ,green (radion xr30wpro colors)
4 x osram hyper reds 660nm
30 x 3w leds (no brand) indigo , ultraviolet, yellow ,red...