Jump to content

Welcome to Grasscity Forums - Register now for FREE
Register now to gain access to all of our features, it's FREE and only takes one minute.
Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. This message will be removed once you have signed in.
Create an Account

Fluorescent flowering


  • Please log in to reply
 

#1
xedubx

xedubx

    Registered User

  • Registered Upgraded
  • PipPip
  • 29 posts
So i know that flowering under fluorescent lights isnt as efficient as hps/hid but... I want someone to confirm for me that it is possible. I will soon have one female under 4 agrosun 24" bulbs or could substitute those for warm white (2700k) bulbs. Will i still get buds?

Similar Topics: Fluorescent flowering     x


#2
JayDouble--

JayDouble--

    Registered User

  • Registered Upgraded
  • Pip
  • 4 posts
ya buddy ive seen it with my own eyes...Ive seen plants budding under a 4 bulb t12 fixture. You just get more/denser buds with hps. I guess the buds look a little more stringy tho.

#3
Benito

Benito

    The Don of Chron

  • Registered Upgraded
  • 941 posts
they'll flower. they'll just be airy.

#4
stoner_brownie

stoner_brownie

    Registered User

  • Registered Upgraded
  • 107 posts

Throw 3-4 cfl 2700k in there, and you'll be golden. You gotta get the cfl right next to the plant though.



#5
xedubx

xedubx

    Registered User

  • Registered Upgraded
  • PipPip
  • 29 posts
so are you saying i can even flower with agrosun 24" full spectrum bulbs as long as i throw in some 2700k cfl's? i hope so cuz that would keep cost down a ton! or are you saying that i should use 2700k fluoro tubes as well?

#6
cultivationist

cultivationist

    Registered User

  • Registered Upgraded
  • 366 posts

Throw 3-4 cfl 2700k in there, and you'll be golden. You gotta get the cfl right next to the plant though.



2500-2700k is for vegging
what he meant to say was 6500-6700k that red spectrum for flowering
dont use 2700k for flower youll get worse results then your gonna get with 6700k
go with warm white/or daylight cfls they are 6700k
:smoking:

#7
Starlore

Starlore

    Activist

  • Bronze Member
  • 2,922 posts


#8
OldSkool1010

OldSkool1010

    Registered Gardener

  • Registered Upgraded
  • 2,741 posts
This statement is not correct. It is correct that from what I've read, light in the red end of the spectrum is better for flowering, but the color temperatures (degrees Kelvin) is reversed. Soft White CFLs with a stronger Red output are rated around 2700 degrees K. This is a pretty neat chart that compares color temp to photosynthesis. Note that color temp is a guesstimate at best and that photosynthesis is based on specific wavelengths of the visible spectrum.

Posted Image

Hope that helps.

2500-2700k is for vegging
what he meant to say was 6500-6700k that red spectrum for flowering
dont use 2700k for flower youll get worse results then your gonna get with 6700k
go with warm white/or daylight cfls they are 6700k
:smoking:



#9
doyoudabble

doyoudabble

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 31 posts
Check out this grow with only warm cfls. I was really impressed so i asked to make sure and he said ya he did it all with the same warm bulbs ... so hey go for it.
Even better start a journal I'd love to see it done.

http://forum.grassci...tml#post2107883

Really nice results.

#10
ThePot

ThePot

    Member since 2006

  • Registered Upgraded
  • 2,204 posts
Thats what I do. I run CFLs/floro tubes the whole grow. check my sig

Basically its just 2 48" tubes (changed to accomodate both stages). Then I have a 3 light vanity fixture with 3 42watt 2700k CFLs then 2 more in random places, more to the side and lower lighting. Then I have 1 daylight CFL just for the hell of it. Last plant I just harvested was about 1 oz total. Current LSTd plant should be at least that much. GL!

Attached Thumbnails

  • IMG_0102.jpg
  • IMG_0103.jpg


#11
Kazamere

Kazamere

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 88 posts
All kinds of fluoros from have been used: Vita Twists to regular tubes and noticed no difference. Go with the cheapo fluoro rubes, 4' is best.

Best results were with two hooded fluoro fixtures ("worklights") connect at the edge for form a 1/2 light tunnel, where a large cola plant it trained horizontal within an inch of the lamp. The resulting bud was fairly dense.

However, it is a huge pain in the ass. save your money and go right to HPS.

#12
inpain2

inpain2

    Registered User

  • Registered Upgraded
  • Pip
  • 5 posts
Will floru tube with a temp of 3000k work for flowering? I been also told that with floru you should remove as many leaves as you can so that the light can get to the bud easier.

#13
Kazamere

Kazamere

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 88 posts
No the fan leaves provide the energy to grow the buds. You need to train the plants instead.

Better yet get an HID lamp.

Will floru tube with a temp of 3000k work for flowering? I been also told that with floru you should remove as many leaves as you can so that the light can get to the bud easier.



#14
cultivationist

cultivationist

    Registered User

  • Registered Upgraded
  • 366 posts
maybe i did have it ass backwards sorry about the false post or in accurate information
if i fucked your whole grow up im sorry
as you can tell i dont use cfl's

#15
toastybiz

toastybiz

    keep it green

  • Old School
  • 14,214 posts
Those are the color temps you need for each stage of the plant's life, no matter what kind of bulb you are using. Same color temps apply for HID lighting...

#16
Starlore

Starlore

    Activist

  • Bronze Member
  • 2,922 posts


#17
Kazamere

Kazamere

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 88 posts
My experience is unless the lamp is green color temp does not matter. Intensity of fluoro or HID lamps is the only factor for growth.

Those are the color temps you need for each stage of the plant's life, no matter what kind of bulb you are using. Same color temps apply for HID lighting...



#18
toastybiz

toastybiz

    keep it green

  • Old School
  • 14,214 posts

My experience is unless the lamp is green color temp does not matter. Intensity of fluoro or HID lamps is the only factor for growth.

The 6500k is best for vegging, and true that 2700k can also be used in vegging but results won't be as good.

The 2700k is best for flowering, and you really can't use only 6500k for flowering, just doesn't trigger the hormonal reactions for bud growth. You'll get some bud but your yield and potency will suffer significantly.

Referring here to use of all of one frequency or the other, not inter-mixing for full spectrum...

#19
Rooz

Rooz

    SpaceJamPurp

  • Registered Upgraded
  • Pip
  • 2 posts
whats up guys,

i use 2 15w 18" fluorescent tubes in a 3 foot cardboard box i set up for these plants i started growing about a month ago, here's some pictures.

http://i258.photobuc...3/iphone053.jpg
http://i258.photobuc...3/iphone052.jpg

so yea there not the best lights but thats what my grow is starting to look like so far, i have the lights mounted at the top to the sides. im not sure what the degree's are. Now if i wanted to bud theses guys once they reach the right hieght do i just use the lights i have now and switch the lights on for 12 hours on and 12 hours off to indicate the flowering season for weed (fall), or do i get some lights the let out red warm light with 2500-3000k for my budding? i really want to have some decent quality weed that will get me high. i use nutrients and stuff so there pretty healthy.

Edited by Rooz, 23 November 2009 - 10:25 PM.
photos



2 user(s) are reading this topic

0 members, 2 guests, 0 anonymous users