• Do you need help identifying a 🌶?
    Is your plant suffering from an unknown issue? 🤧
    Then ask in Identification and Diagnosis.

2700k 1900lm 30w spiral cfl any good?

Looks like the color temp is 2700K which is more ideal for flowering and fruiting rather then foliage.

http://thehotpepper.com/topic/25876-article-light-101/ heres something i found for you about lights
 
Whenever I've tried any Flouro under 5000K in any Lumen they didn't work well for peppers.

In general Peppers aren't light specific as far as Budding is concerned.

Though Blue or red DOES trigger different things to happen as far as root growth or veg. growth goes.
Turns on different growth genes from what I've researched.

For other plants red or blue ranges encourage budding but not for peppers.
I'd forget about using anything under 5000k for peppers in general.

When I switched to T8 fluoros my selection of K got REALLY limited.
3000K , 4100k and 6500k were what I found in T8.
Lumens sucked too.
Can't afford to mess with T 5's.

CFL's seem to have too short of a life span and don't have the K I like.

They(t 8's) suck compared to the T 12 I was using in Lumens and K.
My plants hate T 8's in the K i can find locally.

T 12's worked almost as good in lesser Lumens from 5000K to 6700K as my LEDS do.

BUT I was using EXPENSIVE bulbs that were specifically made for greenhouses,chicken coops,light therapy etc.

LEDS are WAY better,IF you make your own,Commercial ones are overpriced for the ones that work or are junk when affordable.

My opinion is based on my use with the way I grow my starts.Your mileage may vary.
Nothing is set in stone.
What works for me might not for you...
 
pischla said:
Hi, am thinking about buying a few of them and wonder if they will do my peppers any good?

Here's a link to the lamp: (swedish)

http://www.jula.se/s...-1900-lm-421224
Click to expand...

Hejsan! :)

I've had great success with the seedlings under such lamp, but as you move onward and little ones grow, something better is required. I've used the regular 4000K 36Watt fluotube that I had installed before for lighting and it worked like a charm, but I've purchased http://www.head-nature.com/article/06081/Secret-Jardin%C2%AE-TNeon-Set-Growth-incl.-2-x-75W.xhtml in the meantime so I can grow plants further. So far - so good.

Lycka till and feel free to ask more if need be,
D.
 
People post successes using 2700k lamps, but it really doesn't make much sense to me. DISCLAIMER: I AM A NOOB. SOMEBODY PLEASE CORRECT ME IF I AM WRONG!

To paraphrase Wein's law, a light's primary wavelength can be determined by dividing Wein's constant (2.8977685×10[sup]−3[/sup] m·K ≈ 2900000 nm·K) by the color temperature of a light in Kelvin.

In the case of a 2700K bulb, (2900000nm·K)/(2700K) ≈ 1074 nm.

The primary wavelength of your light will be near 1074 nm. If you compare that to a plant's absorptivity spectrum, such as you might find HERE (http://hyperphysics.phy-astr.gsu.edu/hbase/biology/ligabs.html) that's way off the charts. A lot of the energy you're putting into your lights will be completely useless to your plants. You want to shoot for something closer to 440 nm (6600k-ish) for vegetal growth or 670-680 nm (4300k-ish) for flowering/fruiting, as these are where the absorptivity by chlorophyll-a peaks.

I'm pretty sure the toting of 2700k bulbs as being "great for flowering" is age-old bro-science, passed down by cannabis cultivators and seldom challenged.

Once again, I am not an expert. Please correct me if I am wrong. Also, I suck at linking things in forums, so I apologize in advance if I screwed that up.

Oh, and it's better to get larger, higher-lumen lights than multiple low-wattage lights, since lumens don't really add intuitively. This one of those rare occasions where it's actually a good tactic to put all of your eggs in one basket.
 
You must log in or register to reply here.
Back
Top