CFL Grow Room Lighting

Expected yield from 1 plant

  • 5g

  • .5 oz

  • 1oz

  • 2oz+

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Jacob1214

Jacob1214

Member
Elmo's Closet

Elmo's Closet

Active Member
You will have to have circulation in order for the plant to receive new oxygen. I would fit a small fan blowing air on the plant and stirring up the air in the tent. As well as an exhaust at the top pulling the hot air out of the grow space. My temps in my DIY closet grow tent were reaching 90F in my 70F home when i had one exhaust pushing air out and one pulling air in with no fan circulating the air. After placing a small fan in the tent, as well as adding a second exhaust at the top to push air out and another passive intake at the bottom, my temps have gone down quite a bit. From 88-91F to 78-82F with the lights on, and mid 70's with the lights off.
 
Elmo's Closet

Elmo's Closet

Active Member
Also watch where you position the lights you want to hang on the side. The plants wont make use of the light through the bottom of the leaves only the top. You don't want to be providing a lot of light to a small part of the bottom of the plant when the big buds will come from the top.
 
astronautrob

astronautrob

Well-Known Member
Elmo's Closet said:
Also watch where you position the lights you want to hang on the side. The plants wont make use of the light through the bottom of the leaves only the top. You don't want to be providing a lot of light to a small part of the bottom of the plant when the big buds will come from the top.
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I have to disagree with some of this post, plants can utilize light through the bottom of their leaves. Granted it's not going to absorbed at an equal amount when compared to the top of the leaf, plants have evolved to have more chlorophyll on the top of leaves for obvious reasons, but that doesn't mean that the bottom of the leaves are completely useless. Again, not saying it's as effective as light absorbed from the top of the leaves but it's still used by the plant.
 
JrizzlaK

JrizzlaK

Well-Known Member
ive got a cfl setup, 200w dual spectrum cfl bulb with reflector, then 3 x 23w "100w equivelant" around in dark spots just to give them spots more light, ive got 2 plants growing very nicely under that, but dont forget your fan to circulate air, and an extractor and a filter if you dont want a smelly house :)

now my plants are bigger my fan is under the light blowing on canopy and also the light to cool it a bit
heres my box when my plants where young, upgrading to a DS60 on tuesday though so will be changing my setup a lil
heres a pic of my bloody skunk auto at 46 days under this lighting btw also so you can see it does actually work rather well



thebox.jpg 20151212_101022.jpg 20151212_101022.jpg
 

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TJ baba

TJ baba

Well-Known Member
In my opinion you are going to need at minimum x1 exhaust fan and passive intake hole. Preferably, an intake fan would be ideal to keep steady temps. Also I suggest using a 4 into 1 light socket splitter with x4 40w cfls instead of the 105w big boy. If theyou won't fit into the reflector just take the reflector off, i dont think it would make that much difference in such a short grow space. As for spectrum.. my first plant has never seen any light other than 2700k and here she is after about 1.5 months 1449989516415621304468.jpg
 
JrizzlaK

JrizzlaK

Well-Known Member
yes plants wiill veg under 2700k, but 2700k for veg creates stretching, and in a small space you want to avod as much stretch as possible
 
astronautrob

astronautrob

Well-Known Member
Like JrizzlaK said, although it is possible to grow with only 2700k lights throughout, it is preferable to have a mix of warm and cool. So some lights at 2700k and some at 6500k. When I grew with CFLs I liked more of the cool spectrum during veg (I've read cool spectrum helps with root development and overall plant growth) and go with more of a warm spectrum during flower.
 
SPLFreak808

SPLFreak808

Well-Known Member
TJ baba said:
In my opinion you are going to need at minimum x1 exhaust fan and passive intake hole. Preferably, an intake fan would be ideal to keep steady temps. Also I suggest using a 4 into 1 light socket splitter with x4 40w cfls instead of the 105w big boy. If theyou won't fit into the reflector just take the reflector off, i dont think it would make that much difference in such a short grow space. As for spectrum.. my first plant has never seen any light other than 2700k and here she is after about 1.5 months View attachment 3563313
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Looking thirsty lol
 
CCCmints

CCCmints

Well-Known Member
1) no, you will be extremely dissapointed with the results, and on your next run you will be pissed you spent money on cfls when you could have just done it right from the start.
2) http://www.greners.com/i/grow-lights/fluorescent-grow-lights/t5-fixtures-2-feet/sun-blaze-t5-fixtures-2-foot-2-4-8-tube.html - that is what you need for vegging. the 8-bulb model.
3) you have to create circulation in your room. you need an exhaust with a cfm rating that matches the size of your space. you could do passive intake, or active intake, but no intake is not on option (which means the tent you've linked is not going to work). you will also want an oscillating fan inside the tent. point the fan at the plants when they are young (don't hit them too hard) and it will help strengthen the stems providing the plant with a solid base to work with.
4) not even enough for it to be worth it.
 
TootyMcButtsqueaks

TootyMcButtsqueaks

Member
CCCmints said:
1) no, you will be extremely dissapointed with the results, and on your next run you will be pissed you spent money on cfls when you could have just done it right from the start.
2) http://www.greners.com/i/grow-lights/fluorescent-grow-lights/t5-fixtures-2-feet/sun-blaze-t5-fixtures-2-foot-2-4-8-tube.html - that is what you need for vegging. the 8-bulb model.
3) you have to create circulation in your room. you need an exhaust with a cfm rating that matches the size of your space. you could do passive intake, or active intake, but no intake is not on option (which means the tent you've linked is not going to work). you will also want an oscillating fan inside the tent. point the fan at the plants when they are young (don't hit them too hard) and it will help strengthen the stems providing the plant with a solid base to work with.
4) not even enough for it to be worth it.
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what do you think of the new LED fluoro fixture retrofits? viable alternative to T5 HO or no?
 
CCCmints

CCCmints

Well-Known Member
TootyMcButtsqueaks said:
what do you think of the new LED fluoro fixture retrofits? viable alternative to T5 HO or no?
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could you link me to those? diy led fixtures with a good spectrum and high quality cobs are likely much better than t5 ho. people have seen amazing results with those fixtures.
 
TootyMcButtsqueaks

TootyMcButtsqueaks

Member
CCCmints said:
could you link me to those? diy led fixtures with a good spectrum and high quality cobs are likely much better than t5 ho. people have seen amazing results with those fixtures.
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These are the fixtures that ive come across: https://www.1000bulbs.com/product/172142/LEDF-10003.html/?utm_source=Cat-Hero&utm_medium=Cat-Hero&utm_term=Enenergetic-Troffer&utm_content=Energetic-Troffer&utm_campaign=Energetic-Troffer-Cat-Hero

or even diy one like this:

they seemed pretty neat-o, but not enough experience to determine if thats worthwhile
 
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Jacob1214

Jacob1214

Member
CCCmints said:
1) no, you will be extremely dissapointed with the results, and on your next run you will be pissed you spent money on cfls when you could have just done it right from the start.
2) http://www.greners.com/i/grow-lights/fluorescent-grow-lights/t5-fixtures-2-feet/sun-blaze-t5-fixtures-2-foot-2-4-8-tube.html - that is what you need for vegging. the 8-bulb model.
3) you have to create circulation in your room. you need an exhaust with a cfm rating that matches the size of your space. you could do passive intake, or active intake, but no intake is not on option (which means the tent you've linked is not going to work). you will also want an oscillating fan inside the tent. point the fan at the plants when they are young (don't hit them too hard) and it will help strengthen the stems providing the plant with a solid base to work with.
4) not even enough for it to be worth it.
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I will deffinitely add a intake and outtake fan. Ill also create a space for an oscillating fan and carbon filter. However I disagree with the t5s and will use the cfls I have chosen. I see people with videos growing great yields with normal cfls
 
JrizzlaK

JrizzlaK

Well-Known Member
yeah the thing is everyone doesnt like cfl lighting because they can get better yeilds with other lighting, it depends what your in it for,
me personally, i use cfl's my results are nice 2 plants at a time, 1 big 200w cfl and 3 small 23w cfls, my plants grow nice and healthy havent had an issue yet, my buds are going nice really frosty too, dont hate on the cfl people, some people dont have space for HID's and LED panels, i only grow 2 at a time for persy use only so why would i complain, its not like im getting a whole plant of popcorn nuggets like people claim lol
 
Jacob1214

Jacob1214

Member
CCCmints said:
1) no, you will be extremely dissapointed with the results, and on your next run you will be pissed you spent money on cfls when you could have just done it right from the start.
2) http://www.greners.com/i/grow-lights/fluorescent-grow-lights/t5-fixtures-2-feet/sun-blaze-t5-fixtures-2-foot-2-4-8-tube.html - that is what you need for vegging. the 8-bulb model.
3) you have to create circulation in your room. you need an exhaust with a cfm rating that matches the size of your space. you could do passive intake, or active intake, but no intake is not on option (which means the tent you've linked is not going to work). you will also want an oscillating fan inside the tent. point the fan at the plants when they are young (don't hit them too hard) and it will help strengthen the stems providing the plant with a solid base to work with.
4) not even enough for it to be worth it.
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Upon a search after logically thinking about your t5 suggestion, I have revised my decision that using cfl bulbs for my grow wouldn't be as effective as some of the t5 fixtures I have found. I still possess my original statement that growing with bulbs is perfectly plausible. t5 fixtures work better for my setup, I'll come up with a better t5 updated design.
 
rob333

rob333

Well-Known Member
Jacob1214 said:
Lighting: 4x42w CFLs, 1x105w CFL
42w: https://www.1000bulbs.com/product/6822/FC42-S27277.html
105w: https://www.1000bulbs.com/product/8255/FC105-S27OD.html
Grow tent: http://www.ebay.com/itm/like/260898330500?ul_noapp=true&chn=ps&lpid=82
Reflector: http://goo.gl/Dmx7sV Questions:
1.) Is this enough lighting for a single or double auto grow?
2.) Do I really need 5000K+ for vegging
3.) Do I need to worry about heat in this grow room, without circulation?
4.) Minimal yield guesstimate?


View attachment 3561579
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tripple u need 7000k its gunna be hotter then summer and about a pound
 
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