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Cfl Lighting

Cfl Lighting Lumens Kelvins

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#1 Drsmokerson

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Posted 15 November 2012 - 10:04 PM

Okay, so I've been reading post on here ALL day on various subjects, but still have some questions regarding CFL lighting. Many of you have had much success with these lights so I am confident someone can answer my questions... So I understand amount of lumens needed for various stages, and more bulbs equal more lumens, but when considering kelvins, does the number of bulbs compound the kelvins also? I am considering using 1-2 30watt cfl which are 5000k for veg stage which should produce around 1650-3300 lumens, but didn't know if the kelvins would compound as well. Additionally, I'm having trouble finding a cfl bulb that is rated at 2700-3500 kelvins without looking at bulbs for lizards/snakes. The problem there is most of those bulbs are not full spectrum and only emitt UVB, so I would need an additional UVA bulb...
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#2 KarrMcDebt

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Posted 15 November 2012 - 10:21 PM

No. Kelvin is a description of the color of the light. 5000k is close to the color of sumer daylight. (6500k is better for plants if you can find them). Your 2700k and 3200k will be warm white and soft white respectively. (side by side you'll notice the 2700k has a slight red tint.) Now for an overall rating, your Kelvin will average out rather than compound. My CFL grow uses 8 @ 5000k - 23w (100w equiv) bulbs for veg, Hope that helps
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#3 Drsmokerson

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Posted 15 November 2012 - 10:35 PM

Nice. Thx Karr. What do you use for flower stage, and where did you get bulbs?
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#4 mediuseA

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Posted 15 November 2012 - 10:37 PM

https://www.greenpas...0-cfl-tutorial/
https://www.greenpas...fluorescentcfl/


cfls come in cool white (vegging, blue tint, 5,000k), and warm (flowering, red tint, 2,500)

http://boards.cannab...much-light.html

http://www.rollitup....soft-white.html

https://www.greenpas...growfaq.htm#CFL Tutorial

https://www.greenpas.../OG-FAQ/589.htm

https://www.greenpas.../OG-FAQ/583.htm

the two common names for the different light spectrum's to look out for are 'Warm White' and 'Daylight' :toking:
http://en.wikipedia....luorescent_lamp




muA
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#5 kittypup

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Posted 16 November 2012 - 07:18 AM

Hi Dr.... Nice to meet you. I grow under strictly cfl's ... have been since I started growing a few yrs ago. Only thing I could find that was plug and play and in my price range LOL!! I don't like to play with stuff I know nothing about ... elec/wiring ect. It BITES!! LOL! Lowes or homedepot should have the lights you are looking for. Sometime the package just says soft white.... those would work for flowering... the bright white for veg. Sometimes looking for them like that makes it a bit easier than reading fine print. I've found in flower most especially mixing the 2 are about as perfect as you can get with them. Here is a link to a good place to order if you can't find them locally also. http://www.1000bulbs...aec5c847500111e Hope this helps some.... if ya need anything else.. just give a yell.. kind of short on time right now .. have to get to work soon. Hugs!
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#6 Drsmokerson

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Posted 16 November 2012 - 10:48 AM

Great. Thanks so much. I just got back from home depot with 4 23 watt "daylight" cfl's and 4 23 watt "soft white"cfl's...
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#7 mediuseA

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Posted 16 November 2012 - 02:36 PM

:woohoo: it has begun! muhahahaa :toking: muA
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#8 KarrMcDebt

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Posted 17 November 2012 - 11:54 PM

thats about 400 watts of each kind of light, enough to get you started for sure. I go with the daylight, but I hear that something more red is better for flowering (warm white). You will want an idica dominant strain, something that is more short and bushy instead of the tall, leggy Sativas. I was just told that shishkaberry is a good option.
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