Hi all!

I've learned a lot in the past month and i wanted to say thank to all of you!

This is my first grow and i have a question:

First my setup is:

Type : Veg. Chamber : 15"l x 18"w x 36"h
Light : 6 x 40watts of CFL - 240watts total with homemade reflector
Plants : 9 x BigBud from Nirvana
Extraction : 1 x 130CFM Delta 120mm PC Fan
Intake : Passive
Nutrients : Advanced Nutrients 3-Part
Big Bud
SuperThrive
PHup / PHdown
Other needed ?

Flowering Chamber: 4' x 2' x 7'
400watts HPS

Under Construction....


Now for the question:

I have five 40watts CFL "CoolWhite, more blue" and one "WarmWhite, more red" for a total of six so 240watts total.

I know plants need more blue light in vegetative grow but do they still need red light ?

It is better to mix the light type so the plants get more red in vegetative grow or its better to stick with the blue spectrum exclusively ?

Whats would be the ideal mix ? 3 blue and 3 red ? all six blue ?

I must say thats those light are for VEGETATIVE MODE only! flowering will be under a 400w HPS and maybe some added CFL for extra light like 4-5 40watts WarmWhite.

Now how about my nutrients range do i need something else to feed my plants?


I will try to post pics of my setup later today i'm at work now :/ ...

Thanks a lot,


skaos

for vegetative growth you should choose the 'cool white' light. This is also acceptable for flowering, but a 'warm white' light will be better as it is stronger in the red end of the light spectrum which is more suitable for flowering.

http://www.rollitup.org/view.php?pg=...=article&id=25

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Thanks for the reply, but my question was more like this:


Its is better to use EXCLUSIVELY blue spectrum CFL in VEGETATIVE GROW or mix red and blue spectrum ? is so at witch ratio (blue vs red) ?

Thanks!


skaos

if it was me i would put in 1 or 2 red bulbs among the blue because a plant always could use the red.. for example look at the sun it doesn't have all blue light one part of the year and then change to red. it has all colors through out but has a higher concentration at times.

I've always heard a "Full Spectrum" is better. I would say an equal amount of blue and red lights.

yea but you need some variation between veg and flower but skaos has the finial say ... i always thought "full spectrum" was all the colors that the sun has like greens blues reds yellows purples.. every color of the rainbow.. i don't think that cfl's offer all those colors but i do agree that a half and half situation would be good but i would put more blue for veg then add only 1 or 2 blue bulb for flower to even the spectrums and to make it like it was actually growing outside.

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None of the stuff i say is true and i've gotten all pics off the internet

gardenman is right. If you're going for a vegetative light you want to get the extreme upper end of the color range. Like 6500K or thereabouts.

But it's better to mix them in my opinion. Personally I use somewhere between 2/3rds and 3/4ths whatever I'm looking for. So 2 out of 3 or 3 out of 4 blue spectrum for veg and red spectrum for flowering. The great thing about CFLs is that you can switch out lights as you see fit.

Actually I would disgard all this info. Use 6500k (daylights) for vegetative on 24/7. Use 2700k for flowering 12/12.

Nope mix those lights!!! BUT in the end have more blue light for veg and more red light for flowering!

I'm not an expert on cfl growing but I've been reading up on it and it says to only use the blue spectrum for veg but I could be wrong.