ChilLED has pre orders going for their new growcraft ULTRA series and from what I've seen its the highest testing light as far efficiency. Seeing usable numbers as high as 2.7 And you can almost light a 4x4 with 320w! Its pricey though.
I am just moving up from a 48"x48" to a 48"x96" and have a 600w-5 and a 600w-4. I had been using 6 pucks in the 4"x4" and had a heck of a time keeping the heat down. Even with a 6" exhaust. The 5 has been operational now for a week and the bars do an excellent job defusing the heat. My exhaust runs for sort periods a few times a day set at 80f. I will wait until the new ones are in full production and the backlog is reduced. Then order the new replacement bars.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.