cfl, red and blue?

are there different cfl types? like one for blue spectrum light and one for red?

yes! blue for veg and red for flower, the blue can be good for both!

how do i tell which type they are before i go out and buy the wrong one lol.

if your going to buy cfls made for growing then it will tell you if not and your buying household cfls then cool white for veg and warm white for flower, blue is alot brighter to the eye! you`ll know as soon as you see them!

Its not the color of the bulb, its the color temperature which is what your looking for

6500k - for Veging
2400k - for Flowering
6500k/2400k Mixed Spectrum - for flowering as well.

thank you this helped me aswell

thank you this helped me as well

whats that 2400 and 6500 stuff? lumens?

so should i get the "daylight" type cfl bulbs for flowering?

those numbers are
spectrum
I just bought some today
I got the daylight(27,000k)
and the soft white(55,000k)

I hope 55,000k will do instead of 65,000k

Use the 2700k ones for flowering, and the 5500k ones for vegging I say. I think your numbers are mixed though... Typically, soft white bulbs have a lower K value than daylight bulbs.

But here, read this:

Lumens are a quantitative measure of how bright a lightbulb is. It's a measure of "brightness" so to speak.

The "k" value is called the bulb's "Kelvin" value. This is a measure of the "colour" of the bulb. The higher the "K" value, the bluer the light is. A 6500k bulb will have more of a bluish spectrum than any bulb with a lower kelvin value, and less blue than a bulb with a higher value.

i have two 48w 5000k CFL's at the moment and also got a 48w 3000k (warm red light) will this light combind with the two 5000k be ok for vegging and not force the plant into flowering?

Dumboy said:

those numbers are
spectrum
I just bought some today
I got the daylight(27,000k)
and the soft white(55,000k)

I hope 55,000k will do instead of 65,000k

Click to expand...

5500k Is fine. I used them mixed with 6500k and they worked fine

And actually the 2400ks are warm light
And 5500k/6500k Is daylight

Daylight is for veg
Warm light is for flowering.