CFL's for flowering.

[lefty]

so these throw off alot of red is this good for seedlings or just flowering?

 

[newgreenthumb]

Best for flowering, it simulates the fall sun.

 

[dontknowmuch]

Holy cow ! Does this bulb screw in a regular fixture ?

http://www.topbulb.com/find/Product_Description.asp_Q_intProductID_E_51530

 

[learnin to gro]

yes it does and actually ive got the same bulb from the same company. it works great.

 

[Crazy Horse]

I have a 200 watter. Haven't tried it yet so I don't know how good it is. And all it requires is a mogul socket, which are dirt cheap. And it will plug right into your 120.

 

[cyberquest]

ok lets see if i can make my very first post not make me look like a big dummy! )

Hps Bulbs
100w HPS Bulb (9,500 lumens)
250w HPS Bulb (28,500 lumens)
400w HPS Bulb (50,000 lumens)

T5 Floresent Tube (6500k)
24 watt bulbs are 2,250 lumens
54 watt bulbs are 5,000 lumens

High Output Floresent (3000k & 6500k)
Sun Blaze 44 (example bulb) 20,000 lumens
Sun Blaze 48 (example bulb) 40.000 lumens

CFL Floresent Bulb (2700k & 6500k) ( http://www.littlegreenhouse.com/accessory/lights.shtml )

These grow lights are available in 125 watt models. The 2700k bulb provides increased output in the red spectrum which promotes flowering and budding in plants. The 6400k bulb is full spectrum bulb which promotes overall plant growth.

125 watt bulb (9,500lumens) (2700k)
125 watt bulb (9,500 lumens) (6400k)

CFLs are produced in varying shades of white:

* "Warm white" or "Soft white" (2700 K - 3000 K) provides a light very similar to that of an incandescent bulb, somewhat yellow in appearance;
* "White", "Bright White", or "Medium White" (3500 K) bulbs produce a yellowish-white light, whiter than an incandescent bulb still but on the warm side;
* "Cool white" (4100 K) bulbs emit more of a pure white tone; and
* "Daylight" (5000 K - 6500 K) is slightly bluish-white.

that CFL is one i found at a green house specific site, this would be more what you would find at your avarage department store.

Bulb T4
Base Medium Screw (E26)
Wattage 28
Initial Lumens 1750
Color Temperature 2700 K
Color Rendering Index (CRI) 82
Rated Life 12000 hrs
Product Code 40351
Description FLE28QBX/LLCD
UPC 043168403511

so in thought, you would need roughly 29 of this style CFL to produce the same lumens as a single 400w HPS bulb.

this style (which i have seen a few members using, including myself) is more commonly found, like in your 4 to 10 pack set of bulbs.

Bulb T3
Base Medium Screw (E26)
Wattage 26
Initial Lumens 1650
Color Temperature 2700 K
Color Rendering Index (CRI) 82
Rated Life 8000 hrs
Product Code 16254
Description FLE26HT3/2/6H4PK
UPC 043168162548

 

[Stoney Bud]

You're on exactly the right path.

Lumens per/square foot of canopy.

Vegetative = 3,000 - 5,000

Flowering = 5,000 - 6,000

As long as you're close to the right spectrum, it makes no difference which one you use as long as the temps, humidity, and lumens are where they need to be.

 

[cyberquest]

hmmmm, i might need to back off some of my lights cause i just rough figured mine and its about 9600, and thats only on one plant in a closet by itself....LOL.

so i have roughly the equivalent of one 100w HPS bulb only shinning on one plant, in a dinky closet.)


see it wasnt untill my second post i looked like a dummy....lol. )

 

[lefty]

cyber i would give it all the light u have and not back off!

 

[cyberquest]

cool thanks for the input,i will start my own tread on it shortly so i dont jack the thread.

 

[Stoney Bud]

If you have 9600 lumens per/sq ft of canopy and can afford to pay for the 3600 lumens the plants aren't using, then go for it man.

I've never heard of any data from any studies or experiments that support a plant using more than 6,000 lumens per/sq. ft.

There is a heat problem inherent with lights. Having more lights than the plant can use may create a problem with heat.

 

[Tonto]

From experience.....trust me. The HPS will actually cost you the same if not less in the long run. Getting reflectors, fixtures, and the right amount of the CFL's will not be much cheaper than just going out and buying a 400 HPS light. You can get a very good one off of eBay for about $150 shipped. The one I have does not have a remote ballast, and it's still not much for heat concerns. My temps never get over 80.

 

[Tonto]

hmmmm, i might need to back off some of my lights cause i just rough figured mine and its about 9600, and thats only on one plant in a closet by itself....LOL.

so i have roughly the equivalent of one 100w HPS bulb only shinning on one plant, in a dinky closet.)


see it wasnt untill my second post i looked like a dummy....lol. )

I doubt you have 9600 per square foot bro.

 

[cyberquest]

ok i made a tread for my stuff so you all can help me figure it out and i am not hijacking this thread.

http://www.marijuanapassion.com/forum/showthread.php?p=65260#post65260

please take a look and see if i am figuring it all up right.

 

[Tonto]

Posted in your thread as well. Good luck to both of you