I have had a desire for a light fixture with a good dispersion of light for as long as I've grown (~13 years... how time flies...) I have always grown in rectangular areas which is not good for even illumination. I started out with a cooltubed 600w hps in a 100x50cm space. Had great grows, but the light spread was terrible. Lately I've grown with a 315 cmh in 2x4 and a single grow with a 200w Vero29 (4 cobs) in the same tent. The cmh in a dpapillon fixture did light the tent reasonably well, but the sides were visibly dimmer. The single 200w set was not really enough IMO, but I thought I'd get another set later. If I build this light the cobs will go to veg.
Ok that was more background than you wanted, but it's just to show that I have some experience.
Anyway... I want to build the "ultimate" light that I will be satisfied with for a long time. My plan is four Zeus XT boards. At 44x28cm per board + frames they fill my 120x60cm tent almost completely, which seems awesome to me. There are a few drivers I'm trying to choose between.
Led tech sells ELG-150-42AB-3Y which would fit two boards parallel at maximum current of 1750ma. That would seem reasonable as the boards would run at ~38.3v producing ~54000 lumens or ~915 ppfd.
Now that is plenty, but I wouldn't mind being able to do 2.1a per board and 1250 ppfd (64000lumen). I realize that is a lot, but having that option would be cool. For that 2x ELG-200-C2100B-3Y seems like a reasonable choice. One driver would be more efficient, but the closest fit (HLG-320H-C2100) I found only goes up to 152v which is about 3v less than the boards draw at 2.1a. The bigger drivers seem like waste(?).
I'm not sure what I'm asking... I guess if this is a reasonable path to take and a bit of driver advice would be nice. Should I go for the 2.1 amps or 1.75 and add red diodes later? I guess I've gone too far the rabbit hole and analysis paralysis has set in. Give me a push
