What are the best Kelvin specs using CFLs for flowering? All 2,700 or a mix?

justugh

Well-Known Member
I'm using five 42-watt 6500k bulbs and two 2700k bulbs. Should I replace some of the 6500k bulbs?
both are right
the 2700k is what u want for the flowering part
the 6500k and UVB/UVC is what u want at the end of the plants life to thicken them up / make more resins
 

Terminal bud

New Member
Thanks for the quick response. So you think I should use ALL 2700k bulbs for flowering? The 6500k's seem to provide much more intense light, which I thought was needed for good penetration and bud density. No way I'd go for HPS -- I'm scared of the heat and fire risk. Lots of busts around here after fires.
 

qwizoking

Well-Known Member
I prefer the flowering spec, it has alot of blue in it too and decent uv.
One or the other doesnt produce a frostier strain. I dont like the structure from veg bulbs

Likewise i use hps from start to finish these days
 

justugh

Well-Known Member
Thanks for the quick response. So you think I should use ALL 2700k bulbs for flowering? The 6500k's seem to provide much more intense light, which I thought was needed for good penetration and bud density. No way I'd go for HPS -- I'm scared of the heat and fire risk. Lots of busts around here after fires.
Hids would be better ......the HPS has a better output gets u good depth ....and a 1000w u have a choice of a 10k finisher bulb (deep blue with UV)

hids can be used safely
1 make sure they are well anchored (the ratchet ropes work and strong)
2 u have the air path well defined to keep area cool ......your hood is a cooltube with the right amount of air flowing for your area over it
3 get yourself a temp shut off senor ........if it gets higher then a set temp the power to the light is kilt turning the light off lowering the temp
http://www.amazon.com/Lux-Heating-Cooling-Programmable-Thermostat/dp/B000E7NYY8
4 if u are really worried they do make fire suppression systems that are made for tents ( they hang above everything and if the wax melts they release the chemical powder stuff )
https://4hydroponics.com/flame-defender-fire-extinguisher

the last part is just to hide yourself u can use IR blocker .........to a flair camera they just see a room
http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias=aps&field-keywords=ir+blocker

Hid is great for area of coverage plus has fairly good depth
LED has the best for depth with a trade off in area of coverage
 

qwizoking

Well-Known Member
Ive never had issues, no rfi, most threse days have lots of safety features, i use apollo, cheap high quality. Has like 12 settings and will run 400-1k. You can get em with built in timers etc.
No meed for any of that ^ imo
 

Terminal bud

New Member
I've very successfully used a combination of five 6500k lights and two 2700k bulbs in my little [3 square feet] box for flowering. I just put some new plants in and switched out three of the bulbs, so now I have five 2700k bulbs and two 6500k bulbs. The strain and everything else is the same [with philosophical caveats] so I'll compare this grow with the last.
 
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