Hi everyone, just thought I would share my LED build with you. I finally got a chance today to start building the heat sinks for this tank. I have decided to do 2 - 39" x 12" heat sinks both will have 136 LEDs but will have room for more. Got my main plates of 1/4" aluminum cut & 48 pieces of 1/8" x 1" aluminum flatbars as well. First 5 flatbar fins tacked on: Now 10: 15: 20: And finally the last 3: As you can see in the 2nd last pic I removed the very first flatbar fin, yes this was planned because I am going to wrap the whole out side of the 1/4" plate with some 1/4" x 2 1/2" flatbars.