using CFLs, why use 6500k (day) bulbs for veg, then switch to 2700k for flowering?

[Purple Daddy]

also i noticed alot of CFL bulbs say 15 watt equivalent to 60 watt bulb. i need the actual bulb watts, not what it replaces, right?? the highest watts i could find was a 150 watt cfl. it looked like an energy bulb on steroids. then again.. im not sure if it was equivalent to 150 watts or was 150. >>>>>>>>

The 150W CFL is a 42 watt bulb, the watts are the power consumption you need to look at total lumens. A typical 40W flourescent shop light produces 2800-3200 lumens. They comparison is with an incandescent bulb which produces far less lumens per watt then a CFL or HPS/MH set up. LED's use even less power consumption while producing more light/lumens per watt then either incandescent or CFL's.

[jon420]

CFL's are great but you will find that using a mixed spectrum 6500k and 2700k during flower will significantly increase your resin production. Using the 2700k during veg will influence stretching but nothing major. I find that the 6500k alone during veg produces the strongest growth when using CFL's only. Check out my first log, all CFL and if you have questions feel free to ask.

[BuddyBea]

Newbie here.

Just my input, from a biological standpoint. (Which I'm not a newbie at. ) 5000-6500K during vegatation and then ~2700k during flower makes much sense. Lets also remember the long light cycle during veg and ~ 12/12 during flower...

This type of plant grows during the first few months of the year and then flowers (naturally) in the fall. Naturally the sun is more intense in the spring and summer and also during that time gradually stays "up" longer. (Think 6500K and long light cycle.) Then, twoards Sept/Oct, as the earths axis tilts, the angle of the sun as it relates to hitting the earth changes, and is less intense. That's when it gets darker earlier (think 2700k and 12/12) and the plant would naturally bloom.

To me it all seems realitive.

On the other hand, are plants and animals (and bacteria, viruses, etc.) very adaptable. Yes!!!!!