Advantage V. disadvantage CFL's

rickymac21

rickymac21

Well-Known Member
i have a question that hopefully somone can answer.... for cfl's do have the differenent "kelvin" bulbs or whatever?? Im sure everyone knows what im talking about..... basically are there cfls for veging and flowering or do you just use the same light for both and change the amount of light time
 
Shackleford.R

Shackleford.R

Well-Known Member
rickymac21 said:
i have a question that hopefully somone can answer.... for cfl's do have the differenent "kelvin" bulbs or whatever?? Im sure everyone knows what im talking about..... basically are there cfls for veging and flowering or do you just use the same light for both and change the amount of light time
Click to expand...
there are CFL's for both. Warm/Soft are usually 2700k while daylight are 6500k.. i may have that backwards..

2700k is what you want for flower/bloom
6500k is what you want vegetative growth

NOW! it is important to remember, that MH and HPS (which are the popular choices for Veg and Flower, respectively) don't just hang around in those spectrums, they are slightly wider. So you'll want to consider that.

For example..

In veg if you have 6 CFL going... ideally you might want to have 4 - 6500k and 2 - 2700k

For flower, 6 CFL something like 5 - 2700k and 1 - 6500k

the idea is to mimic the sun, and give it a wide spectrum. When cannabis is grown outdoors it has a wide spectrum of light, duh! its the sun. however, during the fall (AKA 12/12) the sun is warmer and slightly more of a 2700k so what you're trying to do is not only mimic the sun, but re-create the ideal Fall season sun because thats what cannabis is expecting. Make sense? Any more questions?

here's a pic of the light spectrum to make sense of some of this.



and while i'm here i might as well pimp my DIY Grow Tent just finished her today.

:peace:
Shack
 
megs

megs

Active Member
lastfrontier said:
you see it seem to me that people feel that if you give it the most intense light you can find and the best hydro setup that it equils dank fat buds and that is simpley not true.


CFL's do not have the danger or heat problems that HPS and MH have also it cost more all around to dissapate the heat and the smell with it also CFL's are self ballest in most cases and there are so many that if one goes out you dont have to shell up 150.00 or 250.00 or what if the ballast goes out what if either of them fail while you are out of town and you loose the crop if one or two fail then i loose a few lumens and keep on rockin again consider the fire danger while you are gone a fan can fail of trip the braker also they use less wattage and you are able to spread the light as you see fit in most cases instead of coming from a central location high above i will say in defence of the production grower large intense lights are a good and usefull thing because it cuts down on the doliers per OZ of production that in my opinion is the onley time you would need the extra lumens i my self will never grow more then 14 plants at a time i get around 3-5 OZ per plant with that light at 14 plants only geting 3 OZ per is still 42 OZ every 4 months what the hell will i do with all that and i am only using about 420-680 watts when you have MH and HPS you are stuck with on or two kelvin ratings and that is it with CFL's i can swap the kelvin rating as i see fit mabey i want to flower at 2100 kelvin mabey i like 6500 kelvin for veg or mabey i want to try 4500 kelvin for veg and see if i get a better sun leaf with CFL's there is room for discovery and creativity we know that all strands are not the same and come from diffrent parts of the world mabey you would like to plant all dark purple indiga and the next crop you want to plant a virgin sativa they have diffrent requirments for light and with CFL's you can provide that with half the cost just remember people that the higher you go in watts when buyin a single CFL bulb the lower you go in lumens per watt stay at 26-55 watts and that is the best spot to stay...................... here are the periods that belong up there disperse them as you please
Click to expand...

For the love of christ, please, locate the period key and use it!!!!!
 
1wesleypipes

1wesleypipes

Member
i just started my first set up and this is more than i planed on getting off each plant in less than 2 months i will be getting a 400 watt hps and a mh bulbs then i start flowering my first 5 plants should i top them and clone each one before i start flowering them or just buy new ones
 
daleh717

daleh717

Well-Known Member
just wondered if you had that good of results growing in soil?good write up,iam gonna give cfls a try when my seeds come .nirvann snow white
 
W

Waynes

Active Member
Any help with this issue would be appreciated. Does anyone know if the higher wattage CFLs put out proportionately more heat than their smaller counterparts? For example, would one 43 watt cfl put out nearly 2x heat as say a 23 watt?
 
Shackleford.R

Shackleford.R

Well-Known Member
Waynes said:
Any help with this issue would be appreciated. Does anyone know if the higher wattage CFLs put out proportionately more heat than their smaller counterparts? For example, would one 43 watt cfl put out nearly 2x heat as say a 23 watt?
Click to expand...
why don't you pick up some bulbs and find out! haha i'd like to know as well, never really considered heat output in that regard. i have a 125W (actual wattage) CFL and it doesn't run nearly as hot as 8 23W go figure!?

:peace:
Shack
 
W

Waynes

Active Member
Shackleford.R said:
why don't you pick up some bulbs and find out! haha i'd like to know as well, never really considered heat output in that regard. i have a 125W (actual wattage) CFL and it doesn't run nearly as hot as 8 23W go figure!?

:peace:
Shack
Click to expand...
That's what I was hoping to hear. Currently I have six 23 watters in rubbermaid bins, and even with my fans running full blast the temps are running at about 85F. I'd like to add more lumens, but I can't afford to let the temps get any higher. So maybe 4 42 watt bulbs would be a better option then? Or maybe I should go even bigger?
 
N

NEEDforWEED

Member
i have a 42 watt that u can touch. and i have 27 and 13watters that will burn the shit out of you.......lol....lmao. if i did a tub grow, id consider two or three 42 watters, its hit and miss tho.....just buy one, and see how hot it gets, in comparison, if u like it, ditch the others.......
 
W

Waynes

Active Member
NEEDforWEED said:
i have a 42 watt that u can touch. and i have 27 and 13watters that will burn the shit out of you.......lol....lmao. if i did a tub grow, id consider two or three 42 watters, its hit and miss tho.....just buy one, and see how hot it gets, in comparison, if u like it, ditch the others.......
Click to expand...
Thanks for the info man. Who's the manufacturer of your 42 watters if you don't mind me asking?
 
N

NEEDforWEED

Member
its called "HYTECH", i bought it at the local electrical supply house......: CED i think.......(City Electric Supply)....its actually warm white(yellow spectrum) in the color rating index. thats why i have 13 and 27w t-2 cool whites.....to veg.....ill switch to all warms for flowering.......i actually have two timw clocks, so im going to use the second timer to control my cool white lamps. i want them to only run for 3 of the 12 hours when i switch to 12/12, i am trying to get this to a science,.....lmao.....good luck tho. please update me/us......im curious..........
cheers bro.
 
storkypig

storkypig

Active Member
lastfrontier said:
you see it seem to me that people feel that if you give it the most intense light you can find and the best hydro setup that it equils dank fat buds and that is simpley not true.


CFL's do not have the danger or heat problems that HPS and MH have also it cost more all around to dissapate the heat and the smell with it also CFL's are self ballest in most cases and there are so many that if one goes out you dont have to shell up 150.00 or 250.00 or what if the ballast goes out what if either of them fail while you are out of town and you loose the crop if one or two fail then i loose a few lumens and keep on rockin again consider the fire danger while you are gone a fan can fail of trip the braker also they use less wattage and you are able to spread the light as you see fit in most cases instead of coming from a central location high above i will say in defence of the production grower large intense lights are a good and usefull thing because it cuts down on the doliers per OZ of production that in my opinion is the onley time you would need the extra lumens i my self will never grow more then 14 plants at a time i get around 3-5 OZ per plant with that light at 14 plants only geting 3 OZ per is still 42 OZ every 4 months what the hell will i do with all that and i am only using about 420-680 watts when you have MH and HPS you are stuck with on or two kelvin ratings and that is it with CFL's i can swap the kelvin rating as i see fit mabey i want to flower at 2100 kelvin mabey i like 6500 kelvin for veg or mabey i want to try 4500 kelvin for veg and see if i get a better sun leaf with CFL's there is room for discovery and creativity we know that all strands are not the same and come from diffrent parts of the world mabey you would like to plant all dark purple indiga and the next crop you want to plant a virgin sativa they have diffrent requirments for light and with CFL's you can provide that with half the cost just remember people that the higher you go in watts when buyin a single CFL bulb the lower you go in lumens per watt stay at 26-55 watts and that is the best spot to stay...................... here are the periods that belong up there disperse them as you please
Click to expand...
Yea, I have an HPS and I still haven't used it for this first grow. Still having fun with my cfls. Doing great too...I may fire up the HPS soon...on 4th day of flowering now..
 
Shackleford.R

Shackleford.R

Well-Known Member
lastfrontier said:
o how quick the haters circle the wagon this is a free place to post if you dont like the material then tuff titty what i choose to wright about is what ever i choose and for the record i am right on with my numbers my light dose a total of 80,000 lumens more then enought to grow 14 plants you only need to buy journeyman tools when you are a journeyman
Click to expand...
what is a journeyman?

:peace:
Shack
 
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