5 x 20W, 1200k each. (CFL)

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UntilIGotHigh

Member
Hey guys, first post and eager to begin growing but I've run into a bump and can't seem to figure out if five 20W CFL bulbs will work to grow one plant? Each bulb has 1200 lumen times that by five = 6000k Would this be all right? I'm also going to grow it in a cardboard box as I don't have time to build a box or buy a tent.
 
MsBBB

MsBBB

Active Member
UntilIGotHigh said:
Hey guys, first post and eager to begin growing but I've run into a bump and can't seem to figure out if five 20W CFL bulbs will work to grow one plant? Each bulb has 1200 lumen times that by five = 6000k Would this be all right? I'm also going to grow it in a cardboard box as I don't have time to build a box or buy a tent.
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Yes, the 5 should work well for one plant, if...

You are confusing lumen and (k)kelvin which are NOT the same. You do need the 6000k daylight blue spectrum lights for vegetative growth, and when you switch to flowering you will need the warmer red spectrum 2700k. Basically, you need a certain type bulb for growing and another type bulb for flower.:leaf::leaf::leaf:
 
csj

csj

Active Member
I'm guessing mate the ones u got are warm 2700k bulbs cause that's all most places like that seem to sell wich is fine for flower cause that's wot u want, but for veg u need 'daylight' which I could not find in wilkinsons, tesco, b&q, wickes and more the only place I could get them is homebase, they sell 18w one's but make sure it states daylight on the box cause it don't say wot Kelvin it is but daylight is 6500k. Peace
 
Stinkmeaner

Stinkmeaner

Well-Known Member
it will work just fine my friend. i started with ONE 18 W on two plants then slowly upgraded . and the CFL's you buy in the store is almost allways 2000-2700 Kelvin (good for bloom)
 
csj

csj

Active Member
Also mate, I'm assuming ur Britannia, tesco sell 23w 2700k warm cfls for 10p each, those ones are 1400 lumens. (Just for info)
 
MsBBB

MsBBB

Active Member
csj said:
Id use 4 daylights and 1 2700k aparently its good to uae a bit of both
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I did not want to confuse so I only mentioned the "Daylight/Bright/White" for vegging and the "Warm/Reading" for flowering. I do a mixture, using the majority type bulb for the stage of growth that I am currently (vegging/flowering). Out of the 16 CFLs I use in my grow I have 2-4 of the other spectrum included. :leaf::leaf::leaf:
 
csj

csj

Active Member
Bright white might be daylight, wot sso said, plug it in if its a blue-white color that's them if its orangey that's 2700k
 
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