LOW wattage CFL's VS HIGH wattage CFL's

HookdOnChronics

Well-Known Member
Alright guys so I made this a while ago when a buddie of mine started asking me "Why not use the big, 150W CFL's instead of all these smaller ones" So I did some research! lol, Here's what I found out, just tryin to spread the love to any other CFLers out there!

Hookd’s info on CFL’s.

Just a little FYI here. But CFL's start to loose their lumen per watt output after about the 30W cfl's. So if it's possible for you, I'd go with an abundance of smaller CFL's, (mathamatically the 26W bulbs are the most efficient lumen/watt wise) rather than 1 HUGE CFL. Because the ONE MASSIVE CFL doesn't put out as many lumens as if you we're to use the same amount of watts, just with more, smaller light's. Does what I'm saying make sense?



Here, this may be better:

I looked at the 150W CFL's, and the one that puts out the MOST lumest/watt that I could find is the "150 Watt CFL Light Bulb - 650 W Equal – Soft White 2700K - 9,200 lumens"
So the best lumen/watt for a large, 150W CFL that I found was 9,200lumens/150watts which calculates to about 61.333 lumens per individual watt.

Now I looked at the kind of light's I use which are the "26 Watt CFL Light Bulb - 105 W Equal - Soft White 2700K - 1800 lumens"
So the best lumen/watt for the smaller, 26W CFL that I found was 1800lumens/26watts which calculates to about 69.231 lumens per individual watt.




Ok so let me break this down for you, straight G style! Hahaha:


A single, 150W CFL, puts out 9200 lumens total. 61.333 lumens per watt.
Now let's see here, 150W/26W=5.796. So it would take about 5.796 of these 26w cfl's to have the same amount of watts being used as the 150w. So let's round that down (just to make a point) to 5 of the 26watt CFL's, that would be a total of 130watts, and you would be putting out 9000 lumens. So for 20 less watts, you would have only 200 less lumens. (Don't forget I rounded down to 5 instead of 5.796 just to make my point.)
If you were to round up instead of down, from 5.796 to 6 which is what logic would tell us to do. That would give you 156watts (Only 6 watts more than the 150w CFL) and 10800 lumens (which is 1600 MORE lumens {almost an entire 26W CFL worth} that the 150W CFL)

So 1600 MORE lumens for only 6 more watts.

Again, just sharing some info. This is what I do instead of using the HUGE CFL's. It's also a LOT cheaper to replace these smaller bulbs for whenever the time comes. Because it's said that CFL's start to lose intensity after about 3 grows. Just some food for thought.

Don't FUCK with me and my CFL's! lol
Hope this helps with your decision. And if not, at least I was able to spread the knowledge. PEACE

-Hookd
 

gumball

Well-Known Member
What about heat output, do you have any large cfls to compare the heat to the smaller ones? I would think 1 or 2 larger bulbs would be cooler than 5 or 7 smaller ones.
 

HookdOnChronics

Well-Known Member
What about heat output, do you have any large cfls to compare the heat to the smaller ones? I would think 1 or 2 larger bulbs would be cooler than 5 or 7 smaller ones.
You know I haven't really done any research reguarding the HEAT output of a couple large CFL's compared to alot of small CFL's. You are probably right though. I have massive ventalation so heat USUALLY isn't to much of an issue. I use 12, 26W, 2700K CFL's for 1 flower room. 8, 26W, 2700K CFL's for a different flower room. And 8, 26W 6500K CFL's for my veg room. All have pretty massive ventalation systems so heat isn't to much of a problem. Every now and then though, when it's get's up to like 96 outside, my rooms will get to 86F... Haven't had any problems as of yet though. (knock on wood) lol
 

faderharley

Active Member
Uhmmm? I use the larger cfls for my grow. I started out with four "Sunlite" Daylite 85watt/350watt, 6500k, 4200 lumens from seedling to 9 weeks of vegetation. Then I purchased four additional "Sunlite" Warm White 105watt/400watt, 3000k, 5000 lumen and four "Sunlite" Softwhite 65watt/300watt, 2700k, 3900 lumens for flowering. Using the clamp style fixtures, I burned all 8 of the red spectrum CFLs w/ 2 of the blue spectrum lights, totaling 10 CFLs for flowering. 26,000 lumens total for my flowering stage. My grow closet is 3ft x 4ft x 9ft = 12 sqft of grow area. Allowing 2167 lumen per sqft. Closet temp never exceeded over 85 degress, and only ventilation is 2 small 8" fans hanging on the louver door, no exhaust, just fresh air by the fans.
I don't know if the smaller watt cfls are any better, but what I do know is that I am convinced CFLs work very well, regardless the size, wattage, and I don't need to worry about excessive heat. I may get a hps for my second grow, just to see what all the fuss is about, but I'll always use CFLs. All ready plan to get 4 more of the blue spectrum lights for my second grow. I was also surprised to find out you can use both spectrums, as long you do not exceed over 50% of the blue spectrum during flowering, and 50% red spectrum during vegetation, in short mixing up the lights to enhance grow and flowering. But kudos on your info, it is greatly appreciated. Stay kool
 

HookdOnChronics

Well-Known Member
Yea CFL's work great, and anybody who says otherwise should go check out my grow journals..... Of course though, HPS is THE way to go!

Basically all I was saying is, The lower wattage CFL's are less expensive and more efficient than the larger one's. Maybe not by a whole lot, but mathamatically the smaller CFL's produce more lumens/watt, are less expensive to replace, easier to find (walmart), and easier to power (regular household light socket)

The BIG one's work great, but the smaller ones are slightly more efficient and easier to setup. That's all!
 

harth234

Well-Known Member
I really like how you can move the small CFLs anywhere so all of your foliage gets light instead of a big CFL just lighting the top.
 

SmeLLyTreeZ

Well-Known Member
What I plan to do for my grow is use both, one big one and four smaller ones, can never have too many lights!
Thats pretty much what I have and I must say I'm very impressed so far and I haven't even seen buds yet lol..

1 68w 2700k all True Watts
4 27w 5500k
2 42w 2700k

Thats 260w total about 14,000-15,000 lumens I think it came out around. For about 1.5square feet of cab.

Hookdonchron I'm gonna come check you setup out, thanks for the info! Good stuff.
 

harth234

Well-Known Member
Thats pretty much what I have and I must say I'm very impressed so far and I haven't even seen buds yet lol..

1 68w 2700k all True Watts
4 27w 5500k
2 42w 2700k

Thats 260w total about 14,000-15,000 lumens I think it came out around. For about 1.5square feet of cab.

Hookdonchron I'm gonna come check you setup out, thanks for the info! Good stuff.
im running 4-5 sqfoot grow with 418w, i hope thats ok...?
 

rolledupdriver

Well-Known Member
Thats pretty much what I have and I must say I'm very impressed so far and I haven't even seen buds yet lol..

1 68w 2700k all True Watts
4 27w 5500k
2 42w 2700k

Thats 260w total about 14,000-15,000 lumens I think it came out around. For about 1.5square feet of cab.

Hookdonchron I'm gonna come check you setup out, thanks for the info! Good stuff.
yeah for the big light im using a 6400k 125w lamp
 

noxzious

Well-Known Member
Its more cost effective to get bigger ones and you can place them nearly as lclose to ur plants as the small ones but there extremely longer so their good hung from the top of the plant instead of above.

Plus its easier to move 3 big cfls than 30 little ones

Someone said about it being good to be able to put them close to loads of leafs to encourage foilage.. But you burn most that grows if you dont check them every 14 hours.

The lumens number may be a mere estimation and there could actually be the same amount of lumens per watt considering there not that far out. Anyway even if not lumens are the amount of light we as humans see, it has nothing to do with the light the plant sees. Ive seen full decent grows with 1 125w Blue for Veg and 1 125w Red For flowering, 1 plant obviously.

And it looks alot neater!
 

HookdOnChronics

Well-Known Member
Its more cost effective to get bigger ones and you can place them nearly as lclose to ur plants as the small ones but there extremely longer so their good hung from the top of the plant instead of above.
Would you mind explaining how? Instead of just making a statement and that is that.....
This makes ZERO sense to me

Plus its easier to move 3 big cfls than 30 little ones
I never move ANY of my CFL's in my setup.....

Someone said about it being good to be able to put them close to loads of leafs to encourage foilage.. But you burn most that grows if you dont check them every 14 hours.
Incorrect if you know what your doing. It's all about knowledge my friend. Mine go 2 days on average without anybody at all even glancing at them (Could go longer, but thay HAVE to be watered every 2 days. If I had a automated watering system, I would not have to even look at my plants but once every week and a half... I still don't even look at my plants but about every 48 hours, a bit longer than 14)... AND the lights are all within 5 inches or closer to any part of the canopy on my plants.

Ive seen full decent grows with 1 125w Blue for Veg and 1 125w Red For flowering, 1 plant obviously.
Ok that's cool! I don't deny it! What was the yield though? Not a whole lot I bet eh?

And it looks alot neater!
My grow rooms look quite neat if I do say so myself. And I ONLY use 26W CFL's.


I'm not trying to rag on you man, I'm just pointing a few things out. Thanks for stopping in here!
 

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HookdOnChronics

Well-Known Member
Thats pretty much what I have and I must say I'm very impressed so far and I haven't even seen buds yet lol..

1 68w 2700k all True Watts
4 27w 5500k
2 42w 2700k

Thats 260w total about 14,000-15,000 lumens I think it came out around. For about 1.5square feet of cab.

Hookdonchron I'm gonna come check you setup out, thanks for the info! Good stuff.
He man glad I could help! That's REALLY what this whole thread is all about in the first place! Just to get some info out there on some research I've done with CFL's when I first started growing. I just saw that first post I made sitting on my computer one day and thought to myself. "Someone else may benefit from this" so I decided to just toss it on up here real quick to help whoever may come across it! The idea of having 1 large CFL up top and using several smaller one's for side lighting is great if the grow space you have permits such actions! Good idea there! And yea check out my grows if you feel like it. All done with 100% CFL's and Miracle Grow nutrients!

im running 4-5 sqfoot grow with 418w, i hope thats ok...?
Yea that should be alright. The 'average minimum' is usually around 100w of light per square foot of growing space. So you should be alright!
 

DumpsterKeeper

Well-Known Member
I'm glad I read this. I was at home depot picking out bulbs and I came to pretty much the same conclusion. I'm currently using 5x27w daylight bulbs at 1750 lumens apiece. If you're calculator is broke, that's 8750 lumens for less money and more mobility than one big long bulb.

And while we're on the subject, could you check my journal and let me know if I have enough light output for the space I'm growing in right now? I tried using more to compensate for a small light leak, but I don't want to burn them.
 

harth234

Well-Known Member
He man glad I could help! That's REALLY what this whole thread is all about in the first place! Just to get some info out there on some research I've done with CFL's when I first started growing. I just saw that first post I made sitting on my computer one day and thought to myself. "Someone else may benefit from this" so I decided to just toss it on up here real quick to help whoever may come across it! The idea of having 1 large CFL up top and using several smaller one's for side lighting is great if the grow space you have permits such actions! Good idea there! And yea check out my grows if you feel like it. All done with 100% CFL's and Miracle Grow nutrients!

Yea that should be alright. The 'average minimum' is usually around 100w of light per square foot of growing space. So you should be alright!
Damn im at the min i guess... will i get a decent yield?
 

SmokesLikeBob

Well-Known Member
Nice info man, I would imagine that numerous smaller bulbs would create more heat than a larger bulb of the equivalent combined wattage...most likely due to more surface area with the smaller bulbs...


SLB
 

HookdOnChronics

Well-Known Member
Thats pretty much what I have and I must say I'm very impressed so far and I haven't even seen buds yet lol..

1 68w 2700k all True Watts
4 27w 5500k
2 42w 2700k

Thats 260w total about 14,000-15,000 lumens I think it came out around. For about 1.5square feet of cab.

Hookdonchron I'm gonna come check you setup out, thanks for the info! Good stuff.
No problem man, Glad I could help if I did! You've got some good lumen output for the size of space your growin. I bet your gonna have a pretty lookin plant(s) You might consider LST if you haven't heard of it. LST is glorious, it's the ONLY way I grow!

I'm glad I read this. I was at home depot picking out bulbs and I came to pretty much the same conclusion. I'm currently using 5x27w daylight bulbs at 1750 lumens apiece. If you're calculator is broke, that's 8750 lumens for less money and more mobility than one big long bulb.

And while we're on the subject, could you check my journal and let me know if I have enough light output for the space I'm growing in right now? I tried using more to compensate for a small light leak, but I don't want to burn them.
Went to your journal and posted some shit there. lol

Damn im at the min i guess... will i get a decent yield?
I just went to your journal and checked out your shit. Ya know I would suggest getting maybe gettin a few more lights if possible. Maybe like 4 more of the smaller CFL's and put them on the sides of the buckets that don't have lights on the ATM. So it would kind of be a square of smaller CFL's around the plants, and then the larger one up top. And if you got a couple bucks, go to a hardware store and get some of these 'sun reflectors' that you put in the front windshield of your car. And try to surround your plants and lights with that. It'll help to reflect ALOT of that light that is NOT getting used because it's lighting up nothing. Does this make sense to you? So instead of the light going to the brown wall and getting wasted, it would REFLECT off the 'sun reflector' thingy BACK TOWARDS your plants thus getting them more light, and increasing your yield, and making for better, happier plants.

Just a suggestion though. It's really up to you. You can come check out my journal if you want to see some more CFL growing.

Nice info man, I would imagine that numerous smaller bulbs would create more heat than a larger bulb of the equivalent combined wattage...most likely due to more surface area with the smaller bulbs...
SLB
I would have to say I think your probably right sir! :) And because of having more built in ballasts because of the more bulbs ect...

EDIT: Everyone in here, or everyone who reads this and grows with CFL's should SERIOUSLY CONSIDER LST for growing! I honestly thing that LST and CFL's go hand in hand together! I would be willing to bet money, that my yield would decrease exponentially if I did NOT LST my plants! So if you ARE A CFL grower. I would strongly suggest looking into LST!
 
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