Thanks for the reply
I was going to build 3 of these myself from scratch
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That's definitely over kill then? Lol
Peace
I'm going to be making my purchase today. I spent the last couple of weeks going back and forth on what I should do for my 4x4. Overkill is always good as we can dim them down. I was originally aiming at the 600w w55 bars. I don't like the idea of relying on one large light. If it goes out mid grow, I would have a problem. So I then leaned towards 2 x 320w 255 bars. Someone on this forum board said hey, why not get 3 x 240w boards. I'd then be getting 720w for quite a bit less money. My issue with that, is that based on the shape of the light, the coverage won't be as good as the w55 bars. I then decided I'm going to spend a bit extra and go for 4 x 240w boards. Total overkill - I know. But hell, they should last a long time if dimmed down quite a bit. The coverage will be awesome. Only one problem - the normal 240w boards don't fit. You could put 4 boards side by side, but that doesn't really help with coverage on the top and bottom. To solve that problem, Kingbrite has 'Double-Boards' or 'separate heat-sinks). These makes the boards twice as wide, but not longer - more squarish. It's a perfect fit for a 4x4 with 4 plants. One Light directly above each plant. Hard to beat that.
I'm going all out on the Cree and UV/IR. You can get the version with switches for UV IR with the QB272 boards. I know, they don't have as many LEDS on them. They are a bit cheaper though - and with 4 lights.... I think a few less LEDS is ok. I will be getting all boards in 3000k but will be using them for the full cycle. I figure I may setup a smaller tent for veg in the future, and the 3000k are known to do just fine for veg as well.
Regarding using 3000k for veg, does anyone here have any input to the idea of adding a 6500k 25w CFL for each plant during veg to help keep stretch down? Worth the effort?