Lighting Reflector question

[BigSm0]

I hope that makes sense. It’s much harder to text than I thought lol. I’m not knocking the boards. I have seen countless grows showing results with both. Plants do extremely well under the boards and cobs. Im happy to see what appears to be a permanent shift towards better lights. Results between the two types is close but the results on the cob side has always been the winner. In my grow and many many others.

 

[Tony21]

You are absolutely right, it's all about DLI.
I do have an Apogee MQ-500 and some lightscouts!
I'm well aware of the very rapid drop off in ppfd with distance, a few inches or a slight change of angle makes a big difference.

It seems logical that the energy loss is less with a short distance bounce, as you say, but is that actually scientifically correct?

My questions that you didn't answer

Would my canopy benefit from reflectors and the "efficacy" of QB boards /diffuse light?

I did run 2 of my cobs with reflectors for awhile, but took them off because I found each individual light was less flexible in use

 

[BigSm0]

You are absolutely right, it's all about DLI.
I do have an Apogee MQ-500 and some lightscouts!
I'm well aware of the very rapid drop off in ppfd with distance, a few inches or a slight change of angle makes a big difference.

It seems logical that the energy loss is less with a short distance bounce, as you say, but is that actually scientifically correct?

My questions that you didn't answer

Would my canopy benefit from reflectors and the "efficacy" of QB boards /diffuse light?

I did run 2 of my cobs with reflectors for awhile, but took them off because I found each individual light was less flexible in use

The distance of travel would be shorter if the light hit the reflector instead of an outside wall.
The way to prove it is by the par readings which I have done.

I can’t answer specific questions based on the quantity of different lights in a large space. More diffused light vs less diffused light would depend on height of the lights and the overall ppf, wattage/efficient. As long as the Ppfd and coverage are the same it shouldn’t matter if it’s diffused or not. It could make for a great science fair project.