It seems to almost double the brightness of the light.:smokin:
It is very interesting to note the two distictly different growth patterns.These plants are the same age. Yet 2 weeks into 12/12 has caused the short plant to really develop preflower pistils. I am concerned the second might exceed 6'. It just keeps on streatching. If 9,500 lumens isn't enough light I wanted 400 watt HPS lamp.. Given my area I just figured that 4k per plant could be enough !! STill adding the honey water, miracle grow and colorburst 15~30~15 . Another 45.. 75.. days.. imp: The 2 plants: seem to be on different schedules.