@Prawn Connery I'm curious why you chose not to space the boards further apart?
I addressed this a bit earlier in the thread: the frames are designed to provide a smaller (3'x3'), square footprint with a bit more light penetration for a one-plant, one station set-up. This is an initial trial with two plants per station, which isn't optimal as you can see gaps in the screen.
The one-plant set-up is purely designed to address legal issues. This isn't my grow, it's my friend's - so ultimately he's responsible for it. I've been trying to convince him to reduce his plant numbers, as growing is still illegal here. That's why I built the frames the way I did. The idea is to have one plant in the middle and prune it back as it vegs so that it can be scrogged. However, you still need a little more light penetration in the middle where everything branches off the main stem. If you go back through the photos in this thread, you'll see each station is set up in rows, so there is a fair bit of overlapping light as well.
So that's the reason why we also didn't go with a strip build, which provides a much more even spread of light. This is my set-up at home. It's a 4'x2' and fully enclosed and reflected, so is obviously more suitable to strip lighting. However, it's the same wattage (400W) as each QB324 build. This is an older photo to give you an idea - "horses for courses", as they say:
