The 4000K light is many times cheaper than any 6500k bulb....(like $20 for a 4000K and $70 for a 6500K.) The 6500K has more "blue" spectrum. I want max veg growth. If on 12 plants grown fat (big) if the 6500K bulb will make a difference in size then I would go with two 6500K bulbs I already have the bloom bulbs sorted. thanks in advance (I already posted this, but I cannot find where it went???)
A 4k will work just fine. There are people that veg and flower with just an HPS. You can do it with a metal halide light too.
That's awesome, the 4000K 1000W bulbs, UV protected are so cheap, and they have a long life span too. Thanks
I personally use 4100k's for veg and am quite pleased, i switched from daylights for no particular reason really. I am no pro so take w/ a grain of salt....