I’m following, and agree. No issue at all with running qb and cobs together. Exactly what the parts sitting on my bench for last 6 months have been intended to do. And I’m definitely a fan of meeting or even slightly exceeding what you need. I haven’t broken down the numbers yet, but I’m guessing 12 cobs and 8 120 watt qbs will put you at the exceed amount is what I’m saying. Or, 24 cobs alone will do it too. You’re not even running reflectors and can’t get inside of 18” with 12 cobs. Maybe the other phenos will take more, and temps certainly play into that. But how much more do you think the plants will handle? Like I said in post earlier, you’re lacking coverage not density. That’s simply because there’s no way to get even coverage at any usable level from 12 cobs on 32 square feet.
When you look at growmau5 quantum canopy, look at how he used the cobs. Pretty sure he used them to cover the the downfall of the qb’s… corners and edges right? I don’t have any idea what his coverage area was either. But I’m absolutely sure between the 6 qb’s and however many cobs, he didn’t setup drivers to have max output at any level. And then he also stated he never ran it at full potential. Not a coincidence I’m sure. When you look at the reality of that situation, most of that stuff was probably donated to him so even on what could be considered an unlimited budget that was pretty much over built.
When you look at what I was suggesting, it’s pretty much same thing he did. Use the cobs to cover edges of qb. Looking at it big picture. 4 qb and 12 cobs are enough for 4x8 by any standard. Probably more than most of us can use. So anything more than that is exceeding. You need to exceed by 12 cobs and 4 more qb’s? In my opinion that’s silly, and will likely just cause more problems. You’re talking like 10 drivers to make that happen, and 120 volt circuit is rated to start 2-3. When I get a minute I’ll draw out what I feel may be a couple of better options. You can take them for whatever you’d like.