Fuck yea that is what its all about trial and error no matter what i am very impressed with cobs but there just not there yet to force me to throw away De units but i am sure there will be a time when de units will be a museum piece :)
were advancing faster them ever in the lighting industry but it all comes down to cost reliability resources i mean its not hard to litterally walk down to a store and buy a DE unit where as if something failed with obs your waiting a week for UPS to show up
but both have there unique benifits right
In the Comparison between Cree Reference Design and HPS, it would seem the HPS is singular without walls.
I use a 400w with parabola in a 1.2 Mtr square area with Mylar coated Walls, without which it would be useless.
I think the normal practice for most would be to have reflective walls or multiple lights.
With lights in a grid pattern the intensity between would likely exceed that at the wall.
My point is the Comparison is using a LED with angled Lens compared with HPS at some height without walls.
Just the same, the technology is getting better.
I intend to build 2 engines for 260 watt system and consider using CXB3590 or Citizen CLU058-1825 with them.
It will come down to the combined wattage and heat, which I am still considering.
I am of similar mind that LED is a long way from HPS in penetration, you can understand why LED companies want to show favorable comparison with HPS, for market share.
You need different Growing methods to match HPS, then there is fruit size and depth.
That said, I am building half the Cree Reference because it might come close to 400 watt HPS with some foliage training.
Personally, I would not choose LED's for Outdoor supplementary light.
Might be wrong?