Can I Use These Cfl's

frostythesnowthug

frostythesnowthug

Well-Known Member
those bulbs work great...
just make sure ya get some daylight 6500k rated cfl bulbs for veg and 2700-3500k(warm white)for flower...
ideally you want a slight mix of both bulbs during veg n flower, to recreate a more natural light..
for example 4x daylight + 2x warm white for veg.
do the reverse for flowering..you get the idea

good luck
 
Dr G.Thumb

Dr G.Thumb

Well-Known Member
frostythesnowthug said:
2700-3500k(warm white)for flower
Click to expand...
I wouldnt us 3500Ks for Flowering... just 2700's. Reason I say that is because, as you go from 2700 to 3000 to 3500 the amount of Green's in the spectrum increases so by using a 3500K instead of say a 2700K you are giving the plant more Green Light vs Yellow/Orange light.

So from a wavelenght point of view, you want to stay as close to 450nm "Blue" for Veg and 650nm "Red" for Flowering. Well further you go up from 2700K you will get further away from that 650nm spectrum which pulls you further away from chlorophyll syntheis

Here is an example "3500K Wavelenght Spectrum"



Notice how most of the spectrum is in the 550nm "Green" range... then a decent chuck in the 600nm "Yellow" range with pretty nothing in the 650nm "Red" range.

My $0.02 anyway... Stick with only the 6500K for Veg & 2700K for Flowering
 
Dr G.Thumb

Dr G.Thumb

Well-Known Member
madcow said:
I use a combo of bolt day light and warm white im seeing great results!!
Click to expand...
As do I... I'm using the 6500K day lights for top lighting as positive tropism reacts better to blue light and then the 2700K warm whites as side lighting and I've been seeing amazing results, I'm actually quite impressed.

Mind you, that is in veg only... in a week or so once all my clones are rooted and I put them into flowering, I will only be using the 2700K's
 
SMOKENBUDDHA

SMOKENBUDDHA

SWEET JANE
i used 1 150w daylight (6500k),1 75w daylight (6500k), and 1 75w (2700k) warm white for veg and it was amazing, now i have 4 60w (2700k) warm white and 1 75w daylight (6500k) for flowering and it seems to be working nice
 
robbie82

robbie82

Well-Known Member
Someone needs to get the skinny on mixed spectrum's in flowering, my head is spinning hearing to use both, not to use both. Someone needs to set us all strait.
 
frostythesnowthug

frostythesnowthug

Well-Known Member
using a mix will create a more natural light..
Even when the days grow shorter there is still plenty of blue light in the spectrum, it is just ALOT less than during the height of summer...
Same applies, There is always red spectrum light in daylight, it just increases as the days shorten.

Surely we are all tryin to recreate nature within the confines of our own homes, so it stands to reason that a broad spectrum of light is will create optimum results.
 
LegalizeNature420

LegalizeNature420

Well-Known Member
BLACK BOY, go to home depot and look for those metal domed light fixtures. You can put the 42 W in that. Im using 3 of em with great success. It's perfect, you can hang em by asking one of the employees to cut you as many feet of chain as you need. Real cheap, I got 3 foot chains for like 40 cents a piece at Home depot. Then get those little hooks to connect it all up. The hooks come in packs of 4 or six. Make sure everything fits. The hooks can fit through the chains and all. I think you can get all this stuff at wal mart too. The metal domes should be beside the bulbs. Good luck!!
 
inforce

inforce

Well-Known Member
Pot mart kicks ass... got the same bulbs 2 on one plant and its doing great. Going back tommorow to get some daylight ones to start the next grow after this harvest! Suprising, these bulbs actually kick ass.
 
robbie82

robbie82

Well-Known Member
frostythesnowthug said:
using a mix will create a more natural light..
Even when the days grow shorter there is still plenty of blue light in the spectrum, it is just ALOT less than during the height of summer...
Same applies, There is always red spectrum light in daylight, it just increases as the days shorten.

Surely we are all tryin to recreate nature within the confines of our own homes, so it stands to reason that a broad spectrum of light is will create optimum results.
Click to expand...
Great explanation.
 
R

rkm

Well-Known Member
I have been using some ecobulbs from Feit Electric.
It has no color temp rating on it or the box at all.
All it says is 1600 lumens, 23 watts, and soft white.
I am using 8 of these on two plants.

Is this enough info, if so will these suffice? I am thinking these are not what I want. I got a decent first time yield but I am thinking the lights would help drastically next time.
 
godspeedsuckah

godspeedsuckah

Well-Known Member
I see alot of people using cfl's and I am going to use them for supplemental lighting, but what I dont see alot of are people using hoods or reflectors with the lights to direct them more. Why is that? I thought those clamp on cone shaped reflectors would work great, are they not necessary?
 
S

SitruC

Active Member
what does 2700k's mean? im lookin for that on the package of my cfls and cant find it anywhere..im wondering if i have the right lights for flowering
 
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