While many veteran growers may scoff at the idea of using Compact Fluorescent Bulbs (CFL) to cultivate cannabis, Oaksterdam University reinforces the technique by having one of their official course books dedicated to the art of cultivating marijuana using CFL bulbs. The book, written by SeeMoreBuds, is titled Marijuana Buds for Less and carefully explains how to grow medical marijuana using only 6 42 watt CFL lights.
The lights, which should have reflectors attached, are used to germinate seeds in soil, on an 18/6 schedule and should be placed no more than 2 - 3 inches above the soil. As the plant grows, the bulbs should remain at all times around 3 inches from the plant. CFL lights do not give off nearly as much heat as HID lights are thus are able to be placed much closer to the plant, without burning it. This also reduces stretching of the plant, which will cause it to grow short and bushy, which is ideal for this method of growing. The 42 watt bulbs give off 2,700 lumens each, and are on 24 hours from just after the seedling stage to the flowering stage. When you wish to force flowering, simply switch the schedule to the normal 12/12 light cycle.
CFL lights are much cheaper to run than normal grow-lights, since they are designed to be energy efficient and for those who are especially concerned about the energy bill, you can grow one plant with as little as one CFL light. Enjoy this relatively new and inexpensive way to cultivate your medication.
I get great results from a 250 watt cfl grow light, it's the size of a 2lt. coke bottle and gives the full spectrum of light for both veg. and flower, I use it with a reflector and grow two plants in a mylar lined grow tent, I get close to a pound
and trying to use 2 40 watt soft white 4fters. will it work?
this is my first attempt using cfl can I use the 4ft lights or does it have to be the small ones
I'm sure I'm just going to repeat what others have said BUT it is often reassuring to know that others have gone down the same path and succeeded. I have 6 plants in veg. stag. I have about 12 CFL's. Total ACTUAL wattage is about 350. Half are coo
using reflectors and having mylar on the walls helps get best output for them too i use them to clone now i have some nice LEDs to use instead and they fit in the tents easier can use less fans and also emits less heat
So for about 36 plants grown sog with 4 240w leds and then 4 accent cfls would produce magnificent results?
Ok everyone wondering about using CFLs needs to read this article http://www.420magazine.com/forums/grow-lighting/111680-cfl-light-tutorial.html. It explains how CFLs are efficient, and which wattage to buy.
have 3 1000 watt sodium lights in a room and notice some dark areas was wondering if i can put some led or cfl lights on lower side of the wall to give the lower part of the plants that needed light
I picked up seven multiple light fixtures with eight sockets on each for a buck a piece [The kind found around mirrors with the 40W globe incandescent]. eBay has 48 CFL Compact Fluorescent 23w=100w soft white 2700 degree Kelvin Light Bulbs for $62.95 f
I came up with a cheap dual light reflector you can make from parts from the hardware store. It's pretty popular and many people have built it. Here's instructions on how to make it: [url]http://www.tomorrowsgarden.net/content/cfl-grow-light-inform
I'm using two thirteen watt 5000k cfls on one seedling working on it's third set of leaves. The lights are placed about two inches away. If someone with experience with cfls could tell me if this is enough for now or no it would be much appreciated.
this is the worst but of info ive ever come across not at all 42 watt bulbs give off 2700 lumens it depends on the type the ones i use give off 5000 lumens each and they are 40 watt, what a waste of time making this site must of been
I'd use much more light in flower than one 2700k 42w bulb and one 6500k bulb. So yes, multiple bulbs are much better. The bad rap CFL's get is due to not using enough of them during flower. More light = better yields and better bud. Period. I use 1400
i got a question about spectrums...for one plant could i jus use one 42 watt 6500k bulb and one 42 2700k bulb? and if so, would it be benifitial for me to rotate the plants regularly? Ive heard of people using similar technics but with numerous bulbs.
I am using a 65 watt cfl bulb atm, from germinating, i have created a little box for them aswell, its like a metre high by about 60 cm length and width, i have the 65 watt above the plants in a reflector by about 3 inches, i have just bought a 300 watt
ok, I'll chime in. I'm currently growing a hybrid strain with an indica [spready] look [critical super silver haze] with six 45 watt Alzo full spectrum cfls. My bulbs hang from their cords and I adjust them daily. The air flow using that array is good.
is two bulbs at a total of 150 watts cfl good for one young plant in a root pouch in 2 sq ft of grow space?
^ That is plenty of light for the size of the plants.Maybe you can try and raise the light from the plant a tad to cause them to stretch a bit. Also make sure they are getting enough nitrogen along with adjusted the PH. Good luck!!
@Guest with all the questions of flowering. All those strains and flowering times can be found on this website under strains.
Trying to grow two girls hopefully, i got them germed and although they are four weeks old to this day, they happen to only be about 2-2 1/4 inches in height. I have them each very close (2-3inch)under their own 26w 6500k [1610 lumens] CFL. Just switch
20W cfl will be fine for a seedling.Keep the bulb as close as possible without burning the plant(1-3 inches).
I wannto use a 20W cfl on my single plant which just sprouted is dat good ??
I grew for three years using cfl... I used the small (100 watt equivalent) cfl soft white, and had about 24 per plant! I also do a unique hydroponic self-sustaining system, which seems to be superior to other hyro methods.
nope. 14 watts is not much. go at least with a 32 watt cfl daylight 5000k then go to 2700k for flowering
Thats what i figured. I picked up a 32 watt cfl 2700k. She is about 18 inches tall and preflowered.Just giving her time to bush out a little more. Thanks for your advise.
Glad to hear that CFL are decent light's for a cheap grow. I am currently using (x2)Flouresent 17watt 75 equivilant bulbs, along with a 14 watt 75 equivalent CFL. Mylar cover space. Plant also get's 4 hours of full sun. Will this combo be worth my time
I made prints on how to make your own light fixtures. lined with foil and 2 cfl bulbs and my plants look great.
how long does tahoe og flower for?
how long does tahoe og take to flower?
how long does og larry take to flower?
ive useed cfls thru veg and is great way to xtend life of ur mh/hps globe.. i do add a mh after a couple of weeks
I only said it looks like a SCRoG due to the screen... let us know how your grow goes, maybe in the journals section, if you feel comfortable.
im trying to do sog,just haven't had time to find some good clones,my clinic was full of moldy clones except for the 4 in the picture.heat is not a problem,i run my lights at night when its coolest.
Yes the SOG style is what I'm going for.The closet is 3 feet long by 20 inches thick anf 5 1/2 feet tall.I dont know the CFL for the fans.the way I have it set up is the plants sitting on a box fan thats on top of a rubermaid container without a lid.he
Link's not working. The CFM is really important to know if you want to control heat. I would suggest checking the CFM on the fan or the box it came in.
Just got the link to work. By the looks of it on two of those actual pictures, you are going to be doing a SCRoG, not a SoG.
What is the size of your closet and what is the CFM (Cubic Feet per Minute) on your 3 fans? The CFM should be able to circulate the air in the room at least 3 times per minute IMO. If you are trying to add more plants I would personally add more ligh
CannaConnoisseur- hi im a new grower to indoor-soil-cfl's,I have 6-65 watt cfl's 4200 lumen each in portable closet with 3 fans.heat was an issue until i switched the lighting schedule to 12p-6p dark, because its the hottest part of the day.I have 11 p
I would say use 12 - 16 42 watt CFLs. Also, at the height question, I have mine anywhere from 1" to 3" away, which is close to provide lumens, but won't burn the leaves.
Hey cannaconno its my first time trying to groe and money is tight but question to you is how many cfl soft light bulbs are needed for 8 plants in (dwc)deep water culture????
as close as possible without burning them
Hi how high should i have my lights from my plants at each stage of growth?
I have 6 65 watt 4200 lumen lights in a portable closet, i have 25,200 lumen total for 11 plants. Its about 3 feet squared,pictures coming soon ~Mayflower~
for vegging...one REAL 125 watt(not the crappy little 26 watt or whatever; its a good sized bulb) output 6500k cfl per plant, switcing to one 200 watt(250 is better) 2700k per plant during flowering. You will only need 3 bulbs for 3 small plants. Obv
hEAL THE WORLD
WHY HAVEN'T YOU LEARNED ANYTHING?
I would get a bigger grow area. If you really can't, then as long as you LST properly, the height shouldn't be too much of a problem.
I decided it would be fun to try and grow some of my own. I'm in a tiny studio apartment and stealth is key. So anyhow.. I rather stupidly set up a grow box out of two rubbermaid tubs out of stuff lying around my house. Its got a nice airflow, a carb
@Jburner, But you can grow dank ass weed with CFL's. Your right, its all about the lumen. Your wrong too...I just harvested almost 2 lbs from 9 plants..100% CFL with two sickly mite ridden low yeild plants. I did some research as well, besides growing
@Jburner, the above comments reflect what you said... we're not saying it's going to give you dank ass weed, simply that it's a proven and cheap way to cultivate Mary Jane.
I've only successfully grown 1 once in my life. And after doing some research I actually choose the CFL method, and I actually used the book described in the article. I started with 2 plants, one turned male and was quickly destroyed, but the female gr
CFL's just don't have the needed lumens to grow the high quality buds [url=http://www.dispensarydepot.com/420-packaging-doobtubes-box]null[/url] that dispensaries want. Please don't hate. Just my 2 cents.
Yes, you can use the tubes, they work great for veg, and although I've never tried them for flower, I'm sure they would do fine, since the other CFLs seem to.
I have a maroc growing under 2 cfl light bulbs first week into flower and it's getting alot of pistils they work great
Can you use the tubes. Not the little ones I have 4 4ft long tubes and 3 little tubes I mixed up the long tubes to daylight warm daylight warm ones and all the little tubes are daylight as well I need help email me email@example.com n ill send pics o
Just wondering for a first timer - Should I buy a set of lights strictly for the growth stage and then a different set for the flowering stage? If I was to grow five plants, that would be approx 8-12 lights for each stage making it 16-24 lights total?
how to stop bugs?
1x 3x10 start/grow room. 1x 9x10 bud room 1000 watts of CFL's bulbs all together. 18 HOURS 6500K CLF.in grow room 11 hours budding 1 2700k bulb to 4 6500k bulb ratio in bud room. no dirt. (dirt tast better but it costs more and it's dirty;). the
No problem and congrats again. Just out of curiosity, how far is your HPS light from the plant? That could be the reason she is stretching slightly, if it's far away from it.
That female tahoe og kush plant has grown into a monster its 5 feet tall in a 7 gallon container very branchy with flowers everywhere and one main spear cola I should have supercropped or topped plant I was able to use CFL's up till recently then to co
I have another question for CannaConnoisseur: right now Im using 42 watt (150w) CFL's to grow my plants but I notice home depot also has 68 watt (300w) CFL's can I use these bigger and stronger bulbs on top of grow to get more light to my plants or wil
I have 6 200 watt 6500k a 8 100watt 2700k on 18/6 all my girls are doing well, and my white widow auto's will be ready in about 10 days.
I have 4 200watt cfl 6500k mixed with 8 100 watt 2700ks 18/6 I will be harvesting 4 white widow auto's in a week or two plus 2 sensi kush and 3 early misty's that i have that are not tall enough to force to flower.any questions let me know.
Thanks! My plants will be ready for 12/12 in a few more days and the growth is amazing I wish I knew about CFLs years ago but better late than never ;)
It will make it a few degrees hotter, yeah, but ventilation is definitely key, you want your inport/export fans to cycle the air in the grow area at least 1 every 3 minutes. The fan should have a CFM power level on the box, which states the CFM is cir
actually its not mylar its called sunleaves ultreflect will using this in my closet make it hotter? im hoping to increase the light the plants receive from the CFLs what you think CannaConnoisseur any advice?
well the stealth cabinet sucked for lack of a better word lol i ran 6 42 watt CFL's and watched the temperature spike to 90 degrees easy so i threw the damn dresser out and put the setup (lights and plants) on the floor of my closet installed a fan bus
Yeah, I think the dates are messed up on this by a day or so.
I just started my first real grow (I had a bagseed plant once of Sour Diesel, completely botched my way through it to some smokable medicine). Anyway, I made a setup to hold 6 23w bulbs (65k and 5k combo). I also have 2 90 watt ufos. I'm covering 5 pla
lol. awesome! i jus noticed something. today is the 8th. it says your last reply was on the 9th? wtf?
You can also combine topping and LST'ing.
The plexiglass thing definitely sounds interesting. I'm not really sure which would be better, since I've never seen a setup like that, but I don't think it would be inferior... might actually be superior to the old way. @Guest, I got around 1 ounce o
thanks. after a nite of smoking n searching i gathered some much needed facts n info. going to use 2 46 watt with Y adapt. n clamp reflctr during veg. then add 2 26watt in the same manner for flowering. im not as concerned about quanity as much as qual
LST LST LST LST LST LST LST LST LST LST LST LST LST LST LST hahaha if you don't know what that means, it stands for low stress training. It's by far my favorite method of maximizing your yield and keeping your ladies to a low profile all at the same t
ok i am a 1st timer n this will be obvious frm the ?s im about to ask. im going to raise a single daughter. my plan is to use 3 26watt (2700k) cfl spiral bulbs with bowl reflectors for veg(18/6). then add 2 more at flowering. is this enuff wattage to
Thanks brother (CannaConnoisseur) for the advice! :) After taking into consideration what you said about hanging the lights and height of pots I have decided to go with a taller dresser this one is 37"h x 23"w which should allow me to microgrow my plan
Honestyly, the bigger the better in my opinion. I'd go with the 23" x 17" because once you hang your CFL lights, that takes off around 4" of the height you have to work with. Then you need to take into account the height of the pot you're going to be
This is an awesome article! I have a question for CannaConnoisseur: Im putting the CFL lights into a stealth dresser setup and I have two dressers to pick from one is 23in h x 17in w inside the other one is 18in h x 16in w which one to you think would
I use soft white for flower and clean white for veg. Green Crack is the fastest flowering strain I've found (6 weeks) which gives 2 - 3 ounces per plant. Many autoflower strains go from seed to harvest in that timeframe, but bewared of the low yield'
I am starting a grow near the equator and was wondering if i should grow my plants in there vegetative state under CFL's 18/6 then put them outside. The sun is always on a 12/12 here? WIll the plants not respond well from going inside to outside? Would
Hey CannaConnoisseur you recomend using 8 42 watt CFL's, is that daylight, or soft white? And can these be used for veg and flower? Also as far as autos go, I heard some will harvest from seed within 8-10 weeks, any suggestions on a realy good strain t
Hey canna connoisseur! You recomend 8 42 watt CFL's, is that soft white or daylight? And should they be used for veg and flower? And I heard some Autos finish from seed in 8-10 weeks, any suggestions on a realy good strain?
i have 2 55 watt cfl soft white over the top of my plant they put out about 3800 to 4000 lumensa piece plus i have 4 26 watt soft white cfl's surrounding my plant i am trying to flower my first plant will that be enoughor do i need to add more and also
If you're going to grow 4 or 5 plants I would use at least 252 watts (6 42 watt CFLs) but more preferable would be around 336 watts (8 42 watt bulbs).
how many cfls would be good for 4 or 5 plants
i am looking to grow 4 or 5 plants how many cfls would you guys recomend
I have never grown before but plan on it soon i would like to use CFL lights but i need further explanation on the Techniques and different ideas people have message me to explain more Thank you.
not the greatest but cheep and effective
been growing with florescent for awhile, works for me~!! then change to sodium when budding ~!~!killer
yes, it can very well be done. ive had 4 successful grows using nothing but cfls for vegative growth at 18/6 and threw a couple more in for flowering. a total of 6 42watt cfls equalling 7200k which is acceptable for flowering. Each time i grew only one
home depot has 68 watt cfl's (300 watt equiv) for about 15bucks apiece they put out 4200 lumens each. get some shiny sheet metal in the dryer vent section, a couple light sockets, cut the end of a new heavy duty ext cord bend the metal into a reflector
home depot has 68 watt (300 watt equiv) about 15 bucks apiece. give off 4200 lumens. big suckers though. get a piece of shiny sheet metal in the dryer venting aisle (very easy to bend into shape) with some light sockets, wire them up and boom a cheap r
To be sincere,I'd like LED lights.
I am using three 200 watt equiv cfl bulbs for 5 plants each are about 9 inches and so far in the veg stage I am able to clip almost an oz. of leaf from them each week.The plants are so bushy that I am gonna have to figure a way to get light to the inne
"IF YOU HAVE SOME BLOSSOMS THAT DONT TERMINATE (STOP GROWING) JUST PINCH OFF THE SPROUTING BUDS AND YOU CAN RECOVER SOME LOOSE BUT RIPE BUDS IN JUST A FEW DAYS" I'm totally confused by this statement...
IT'S GOOD THAT THE KNOWLEDGE IS SPREAD FOR ALL DID YOU KNOW THAT RAW (UNCOOKED) THC-A WILL NOT WILL NOT GET YOU AS HIGH AS COOKED (250`F FOR 5-10 MIN) WHEN EATEN IN CAPSULES) WOW WHAT A DIFFERENCE! IF YOU HAVE SOME BLOSSOMS THAT DONT TERMINATE (STOP
You can grow great buds with CFL lights but you are better off getting the 125w 200w or 250 watt from your nursery/hydroponics store or online they are $40-100 but come in 2700k for flower and 5000k for veg. Well worth the investment, they also need a
You all "ROCK" Great info!
CFL's is the way to go if you're strapped for cash, want some decent buds and want a low electic bill. You can also keep the lights around 3 inches from the plants, unlike with HID.
ok , i just planted again, this time i have to do this indoors , the last plant , i had growing was outside my house , and it was growing good , and then one day. came out side to look at it was deader the doorknob , think my neighbors did something to
Remember, the soft white bulbs are better for flowering, and the clean white are better for veg, although like HPS, you can veg and flower with the soft white.
ok thats just what i happen to have in the house , guess i gotta go to walmart and get some better ones
That's probably the bare minimum to even make it worth your time, but technically yes, you can with only 26 watts.
cant find any 42 around here , can i use 2 13
I used CFLs exclusively for my last 2 grows. They werent 42 watt, and of course the buds were smaller than when I used my HPS, but they were still very decent sized buds and smoked incredible.
Yeah I think it tends to create a lot more bushy plants with shorter internode spacing than the T-5 fixture, which is what I prefer, but it all depends on what you're looking for.
has anyone tried this as a replacement for a T-5 light. i would like to use this method during my small to medium veg.
@Thorlos the Red: I don't use just one bulb, I use at least 2 or even 3 per plant so the lummens are well above that. @lindzzz: I used to do the whole process under CFL and was going to do that for this one to show others how, but it's fairly self
Florescent lights are actually in the green light spectrum. Sunlight is blue and tungsten is amber. I've seen the "daylight" bulbs that are in the sunlight spectrum and had some plants respond very well to them. You usually can find the option of "f
Great advice CannaConnoiseur, I would have just bought the clear bulbs but I'm glad I read this first. I think that from looking at your logs the CFLs give a nice yield for personal use, but you have been finishing under other lights right? Maybe the c
Get the soft white CFL's which give off more of an orange color, whereas the clean white CFL's are the bluish hue.
I am surprised they recomend a flowering spectrum bulb (2700k) for veging, i use a veg light spectrum (6500k) for veg and then switch bulbs to flowing spcs(2700k). I also use a min of 100 watts per plant (thats 26w cfl) but ya cant have to much. Curren
I am surprised that they recomend veging with a flowing spectrum (2700k). I personaly use a veging spectrum (6500k) to veg and swith when flowing comes. I am currenly in an experiment with two autoflowers and am using cfls. I am using 100w(26w cfl) 650
im confused, doesnt the spectrum form these lights give off a blue hue, which if remember clearly is only sufficient for vegetative growth, just as metal halide.... everyone prefers HPS because its spectrum is practically and PURELY awesome for floweri
I have always thought that having some CFL's running along the walls of a grow would help a bit, Not too much but seems like it would get light into the areas the light beaming from up top can't get to. I plan on doing this once I get my shed figured o
Bump it up to at least 2 42 watt CFL's per plant. That way you'll get at least a decent harvest
Just Started 1 week ago with 2 26watt=100watt 5000k. Is this ok and for how long? They look ok so far
This method is ideal for the first time grower. It is low investment with decent results. It doesn't make the super thick buds like HPS, but you don't have to deal with heating issues. Pretty easy to rig up a big light by using electric sockets and spl
i know of someone very close to me that uses cfl. 55 and 65 watts there are good when they are used right. go for 55 to 85 watts are best, (trash the low watts and only use high watts for over head) because the power used compared with the light dis-ch
I have done a few cfl grows in my lifetime and I will have to swear by this method for the grower on the budget. I use one cfl per plant and grew some nice buds right in my closet. This method takes a little care to setup and isn't ideal for high yield
Yeah, check out the journals section of the website, I'm doing a CFL grow and will have pics up tonight or tomorrow.
Does this really work.? It seems to easy to be true, have any of u asctusally done this?
So glad I read this! I'm gonna start using them now just to save money on electricity and reduce the temperature in the grow area. Thanks for all the helpful tips everyone!
My friend told me he was growing with cfl lights and I laughed at him. Now he has 5 plants in their 4th week and they look very healthy. So I was wrong all along. It seems that CFLs can be used to harvest plants!!!! You get what you pay for, and
I have yet to try them, but hear great things. A good friend of mine uses and is using them right now and swears he wouldn't use anything but. So there must be something good about them.
this is how i started when i didnt have the money to get all the HPS lights, i had a box from mc'ds, lined it with foil, put the plants that are in pots and get the top covered except for the lights and vent! it went VERY well
I've grown using the above referenced book. It works. Now the downside- google "how to properly disposw of cfl bulbs" and see if you still want to use them.
I wouldn't even attempt to grow a plant under a single CFL, but here's what I do do. Get a bunch of outlet to socket plugs like [url=http://www.homedepot.com/h_d1/N-5yc1v/R-100170446/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053]so[/url]
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