Quote Originally Posted by Dutch Pimp
Hi... Mac

I go three weeks under 6500k fluoro tubes...then, I go CMH all the way to harvest.

the grow before that, I went Hortilux HPS all the way. Less stretching with the CMH, about a foot shorter and the CMH ran cooler temps in my closet.

Reflectors play a big part with UV light; I think, too? Not all reflectors are created equal. I think the dimpled ones are better. I have a smooth polished one......and have to 'offset' my plants some; not directly under the bulb....so I rotate daily.

Lots of peeps like the 'warm' 4000k MH bulbs, too....(like sunmaster's for example)
Thanks for that DP, I was real interested because of what Rusty was going to try with vegging using UVb. Since you are not about to give up your CMH I will assume that the overall out come was superior to the HPS.

I think the CMH bulbs have the best spectrum over all of any HID bulb available. Only draw back for some is it's availability in 200w and 400w only; if they made a 600w I'd be trying one by now.
I am very impressed with the SunPulse bulbs that are rated in K temp terms. They make 4 flavors; 3k, 4k, 6.5k & 10k. The 3k is great for flowering but the 10k is loaded with UV.

Recently saw the new "light spinners" from Life Light Technologies, these combined with a mix of SunPulse bulbs seem to be a pretty cool set up for achieving a great mix of spectrums for growing. Almost got me thinking about moving away from my LEDs, but want to try and put 4- TI ProBlooms over a 4'x4' aero/fog tray first to see if I can achieve LED superiority to anything else.