Are these the same as cfls?

D

Doherty666

Member
http://cgi.ebay.co.uk/12-Philips-Low-Energy-100w-Light-Bulb-Bayonet-BC-b22d_W0QQitemZ200443980140QQcmdZViewItemQQptZUK_Light_Bulbs?hash=item2eab64696c


Colour
Name Colour
Temperature Description Warm white 2700K Similar to light from an incandescent bulb, distinctly yellow. Soft white 3500K Whiter than an incandescent bulb, but still somewhat yellow. Cool white 4100K A more neutral white often used in offices. Daylight 6400K A distinctly bluish white, close to the colour of natural lightwhich one would be best?
 
J

justparanoid

Guest
6500k for veg , 2700k for flowering. get the biggest actual watt bulbs you can afford to use.

JP
 
High Time 420

High Time 420

Well-Known Member
I have grown from start to finish with those exact same bulbs, they are 2700k but they still done a fine job during veg.

Stick with these smaller cfl's and not the bigger ones. You can spread the light more, cheaper to replace, and so on.

peace
 
Am I Norml

Am I Norml

Active Member
purfict said:
i grow using 10,000K and my vegging is outragious and flowering is pretty decent.
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lumens don't add...you cant take a 2150 lumen light bulb and a 2700 lumen light bulb and get a 4850 lumen light source ... your lumen output is never greater then your biggest lamp .. so in this case you would be getting 2700 or close to it per SQ foot not 10,000 unless you have a 10,000 lumen bulb in there somewhere ...
 
High Time 420

High Time 420

Well-Known Member
Doherty666 said:
yeh in the uk
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Ok, head to your local Screwfix direct and grab some 25w cfl's @ £1.93 each. Get as many as you can and make some reflectors for them. They are only 2700k, not the best to veg with but i have used them myself and can say they did a good job, i had no strech and great growth.

peace
 
P

Phoenix573

Member
Am I Norml said:
lumens don't add...you cant take a 2150 lumen light bulb and a 2700 lumen light bulb and get a 4850 lumen light source ... your lumen output is never greater then your biggest lamp .. so in this case you would be getting 2700 or close to it per SQ foot not 10,000 unless you have a 10,000 lumen bulb in there somewhere ...
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I think he meant 10,000K color temperature. They do make bulbs that I saw on this website with aquarium supplies that were called "Deep Purple" and had an advertised color temp of 9800k. Though, I don't see how that would benefit your overall balance of growing in veg. Yeah, you want a majority of the light that your plant is receiving to be bluish, but not ALL of it, and certainly not violet colored.

6500k bulbs have the perfect color for veg since they look like they have a hint of blue when looking at the bulb but are mostly white. White light allows your plants to get a bit of all the other colors of the light spectrum as well, which IS NATURAL in growing in nature (white light, I'm referring to), which I'd think would lead to better growth.
 
Am I Norml

Am I Norml

Active Member
Phoenix573 said:
I think he meant 10,000K color temperature. They do make bulbs that I saw on this website with aquarium supplies that were called "Deep Purple" and had an advertised color temp of 9800k. Though, I don't see how that would benefit your overall balance of growing in veg. Yeah, you want a majority of the light that your plant is receiving to be bluish, but not ALL of it, and certainly not violet colored.

6500k bulbs have the perfect color for veg since they look like they have a hint of blue when looking at the bulb but are mostly white. White light allows your plants to get a bit of all the other colors of the light spectrum as well, which IS NATURAL in growing in nature (white light, I'm referring to), which I'd think would lead to better growth.
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oh i definitely could be mistaken but either way...definitely NOT a good thing... :blsmoke:
 
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