I thought that I would share my led project that I just finished. I bought merlin3 old diy led light. I stripped out the light and reused the leds and ardurino controller. It has been a night mare trying to rewire it all and figure out the ardurino controller. Im not the best tech junky so my brain was fried several times along with several moments of the magic smoke that comes out of electronics on occasion.
My old setup was all cree leds on 3 different 9x14 sinks. I had them all running on nondimmable drivers. I wanted to add more leds but my sinks were already full with 47 leds per sink. I ended up adding 6 2x14 sinks with 11 leds on each sink. I wired them all the new leds in 7 different strings with each color on a different string so I can control it with the controller using ldd drivers. I did royal blues, blues, greens, whites, and reds. I found small 2in muffin fans for each of the new sinks for cooling. I am anxious to get my hands on the clubs par meter to see what kind of par I am getting. I was getting 600 par six inches below the surface with my old lights so really curious to see what they are now. I have a 180 gallon tank that now has 206 3 watt crees. This project added 66 more leds to the system and allowed for full dimming of all my led strings.
Jeff