Flowering in nature takes place in skies that have transitioned from a predominately blue spectrum (spring) to a more red one (autumn). Blue tends to limit stretch, not enhance it. I was told pretty early on by both knna and Old Mac (led growing pioneers) that there was no need for more than @ 10% blue light during flower, and that has worked well for me. The consumption part has not really been a consideration, but rather just trying to optimize what the plant needs/likes. I have dropped the power substantially during veg because I haven't seen any real benefit to running at high power levels during that stage.
These plants are shown at 28 days of vegging under my VolksLED, which pulls around 100 watts.
These plants are shown at 28 days of vegging under my VolksLED, which pulls around 100 watts.