I don’t mind being questioned, it keeps me on my toes lol. He is free to do 6 boards, just like you, or anyone else for that matter. I’d be happy to suggest a driver for that if need be.
In my opinion, you’re the one comparing apples to oranges though lol. 2 cfl’s is absolutely better than one. That doesn’t make 6 quantum boards in a 4x4 automatically better than 4. I don’t think I was making it anymore complicated than needed either, just putting the info out. I thought it was pretty straight forward without any bs.
I’ll try this way… two of those kits in a 4x4 is pretty much identical to an hlg-550. Par data is out there, tested by third party to meet and exceed single ended 1000 watt hps in 4x4. Add 50% more light to that and you’re easily exceeding light saturation levels. Guys are growing 6 boards in that size space, but not at 120 Watts per board. More like 60-75 Watts per board. Even hlg knocks down drive current when going to three boards. And they’re not even suggesting you need that much, just applying the driver that fits the best.
Go look at the cost per watt of running 60-75 Watts per board with 6 vs 120 Watts per board and 4. If that’s something anyone is interested in, I’d be happy to spec it out. Most people aren’t willing to do that for 6-10% boost in efficacy. Pushing the 6 any harder doesn’t make much sense either. Like I said earlier that puts you into needing additional co2 to raise photosynthesis levels any.
The option there, but 4 boards plus 70 watts of the reds is already going to have some ridiculous par levels. Doing anything more to that setup is getting into some really deep led nerd type stuff, or maybe if the size of space changes.