LEDs or traditional lighting?

[StoneMeadow]

LED in veg rocks all lighting.....a combo of HPS and LED in flower will get the best yield and quality....i've grown with about every combonation from T5/HPS...HPS alone...LED alone....and the HPS/LED will be your best bet....i use 150w LED's on either side of a 600wHPS for 900w total over a 3x3 tray and have been yielding 560-610gr dry....with HPS 600w alone the yield was 330-350 and w/1000w HPS i yielded 400-445gr....w/450w LED i yielded 330-360....those are hard numbers w/same strains and nutes...you can check out my LED runs in the link in my sig :jointsmile:

This is very interesting information...thanks!

1) 2x150w LEDs + 1 600w HPS = 900w: 585/900 = .65 gm per watt yield.

2) 600w HPS alone: 340/600 = .57 gm per watt.

3) 1000w HPS alone: 422.5/1000 = .42 gm per watt.

4) 450w LED alone: 345/450 = .77 gm per watt.

So, LEDs are most efficient, but it's also clear that the more light you throw down on a given area the better. Presumably, right up to the point where you can no longer control the temperature, right?

Thanks again...really good stuff!