So I've been stockpiling parts for a large DIY led fixture utilizing the bluefish mini led controller, my plan is to have tight grouping of the leds 15 3w leds in each group a total of 13 groupings separated into 6 channels on the bluefish controller, 1 395-405 UV/purple, 1 417-420 nm UV/purple, 1, 420-430nm UV/purple, 1 4500k white, 1 10000k white (am possibly considering replacing with 6000k white instead), 1 IR, 1 650-660nm red, 1 520-530 cyan, 1 440-450nm blue, 1 460-470nm blue, and 3 cree royal blue, and 2 more led's yet to be determined. My goal is to emulate the spectrum offered by halides and t5's as much as possible. I would like to make multiple pendants each housing 1-3 groupings of led's so as to allow for multiple positioning around the tank, the big problem is I want to use passive cooling, no fans(one less thing to fail over time around saltwater) and I'm having a hard time finding any kind of affordable heatsink solution that can passively cool 45-135 watts of leds per pendant without ordering from those china manufacturers where, I have to get a quote , possibly order more sinks than I need, pay with western union, etc. Does anyone know of a website where I could just go order 1 sink for a test build, then order the rest if it works ok and doesn't get too hot. I would also appreciate any advice as what to use for the remaining two leds considering full spectrum 400-840nm.
