Advantage V. disadvantage CFL's

GuyLeDuche

Well-Known Member
I got a stick of 1/2 emt conduit (ask an electrician) and bent it into a double U-shape and joined them into a rectangular ring. The ring is suspended by two chains at each end. See attachment.

I have 8 CFLs mounted on the conduit ring around the periphery of the plants with a 300 watt full spectrum LED suspended from the tent in the center, directly over the plants.

I very the color spectrum of the CFLs according to plant development stages. Right now I have (6) 23 watt CFLs at 2700K and (2) at 6500 K - the plants are in early flower. This rig is in a small 2'd x 3'w x 5'h stealth tent where I can grow 2 or 3 small autos. I can raise (or lower) the light ring and LED lite independently.

So far (3 grows using this arrangement) I've averaged about 1.5 oz per plant and haven't experienced any negative side-effects. Plants seem to like the lighting combo.

View attachment 3554921
Buddy those reflectors are a serious fire hazard :( . The ballasts on CFLs are right at the socket and get hot as hell, they specifically warn against using with that type of reflector, as do the actual reflector companies ( the last one I bought new said right on it NO CFLs ) . try to rig up something to get air on the ballasts, like this cheapo rig I built for projects

PICT0011.JPG It's just a $1 store turkey tray with a T and 2 Ys. I also cut out the tops of the trays right above the bulbs so air can move up over them and out the top of the tent...
 

CobKits

Well-Known Member
advantages: you might have some laying around and they have a little bit of UV
disadvantage: toxic mercury when you break one and the fact that they are 80-90 lm/W for a year or so vs the $5 led bulbs that are 100-120 lm/W and last 10+ years
 

frica

Well-Known Member
advantages: you might have some laying around and they have a little bit of UV
disadvantage: toxic mercury when you break one and the fact that they are 80-90 lm/W for a year or so vs the $5 led bulbs that are 100-120 lm/W and last 10+ years
70-72 lm/w if they're 23 watt CFLs
60 lm/w if they're those high power CFLs that draw 100-300 watt.
+they require a reflector >> reflector losses.

Any decent LED bulb should be able to get 90 lm/w with the diffuser popped off.

CFL should be dead tech.
 

alwayshigh1

Member
CFL should be dead tech.[/QUOTE]

Everyone has different growing styles and preferences... For a newbie grower, CFL's are very safe and easy to use... Or if your just into making hash! I Just harvested 4 1/2 oz of two plants in a very small tent! The buds are lovely considering its my 2nd attempt at producing.... peace.
 

frica

Well-Known Member
CFL should be dead tech

Everyone has different growing styles and preferences... For a newbie grower, CFL's are very safe and easy to use... Or if your just into making hash! I Just harvested 4 1/2 oz of two plants in a very small tent! The buds are lovely considering its my 2nd attempt at producing.... peace.
Preferences like inferior efficiency?

How are they safer than LED bulbs?
They run hotter and contain mercury.

LED bulbs have become cheap (very cheap in states where they're subsidized harder) and are a lot more efficient.

And I'm not talking about COBs or any other expensive shit.
I'm talking about regular philips and ecosmart bulbs.

Entry costs of a grow with LED bulbs is low, and you can actually achieve 1g/w with it unlike CFL.
 
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slapmehard

Member
the cfl's are more versatile then the LED bulbs.
good luck on a vertical grow with those. it also rules out the basic Y splitter and if you try a better adjustable base multi splitter it kills you on room.
I do use a corn bulb led and two just 40-50 watt ones cost the same as a mars hydro 300
the other types just don't work in my space
so its all just like the growing part, different methods that all do the same thing.
 
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frica

Well-Known Member
the cfl's are more versatile then the LED bulbs.
good luck on a vertical grow with those. it also rules out the basic Y splitter and if you try a better adjustable base multi splitter it kills you on room.
I do use a corn bulb led and two just 40-50 watt ones cost the same as a mars hydro 300
the other types just don't work in my space
so its all just like the growing part, different methods that all do the same thing.
If you have the space to go vertical a HPS is way better than a CFL anyway.
"heat" isn't an argument as HPS is more efficient.

Also if you keep the diffuser on you can use them just like your CFLs (Y splitter, horizontal orientation etc.), there are already plenty of LED bulbs that are 100 lm/w, which is 40% more efficient than any CFL.

Yes, a real size issue.
Pic is from Blynx on ICmag 8x10 watt (800 lumen per lamp) achieves 1g/w (80 gram) with his set up.
Has replaced his CFLs with LEDs after testing a 1-2 years ago or so.
You don't need much space for a nice grow.
To get 80 gram dry with CFL you need at least 150 watt, which takes up space too.


And as I've said, you don't need to remove the diffuser if your space requires them to be in different orientations.
Besides, many leds tend to be as short as CFLs are wide.
 
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slapmehard

Member
first off ...nice grow man

I look at it like this
you have 8 sockets I could do that grow with just two and two splitters on 26w and 40w cfl's

not even a 150 hps would work in my loft I would lose too many lumens with the distance I would need for the strain I grow.
in my case I have a 2x2 and 3.3 feet of growing height
so its tight and I want to make it worth my while but really have to keep it on the down low, non legal state I don't need them to take my fucking house.
so I needed something that's fairly easy decent smoke and something that don't smell like skunk but sweet smelling or fuel like is ok.
so I got a clone from a friend that fits it perfect

its 150 worth of cfl's and 1 30w corn bulb led
hard access really sucked it really took care of itself but daily moving of the lights is a must I was able to put a cfl in the middle with no issues

this was about week 7million most was 11 1/3 went 12-13 lol it got a wee bit chilly
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20161124_101818.jpg

and yes burned from the led my bad



20161117_192921.jpg

poor girl I kept breaking her

I don't weigh but damn I had a lot
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20161215_160505.jpg 20161215_100725.jpg

I left the stuff inside to ripen was pretty decent
so...... it all works you just have to work it best for each grower its not all cookie cut and dry
 
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frica

Well-Known Member
I don't think 2x2 with almost a meter in height is that tight.
But it's a learning curve, after a while using smaller amounts of space becomes easier as you learn new tricks.

Would be enough space for 2 of these bad boys, they're only 7-8 dollar each.
Quite an amount of light.
 

slapmehard

Member
yeah I see those but its too much light in one area and I prefer even coverage but you can use 3 bulb don't have to fill it.

2x2 is pushing it but I got lucky and can sink my 5g planter down so that dont hurt me.
I think I have to fill the walls with those cheap thin panels
maybe? nah cfls work for me I guess.
 

frica

Well-Known Member
yeah I see those but its too much light in one area and I prefer even coverage but you can use 3 bulb don't have to fill it.
.
Too much light in one area?

Coverage would be about as even as you can get with any normal led lamp.
What makes you think that the coverage would be uneven?

It's easy to make incandescents work and grow weed with it.
Few halogen spots, 300 watt in a 2x2 area. 40 gram dry or so.

That also works, doesn't make it extremely inefficient.
 

slapmehard

Member
halogen? I'd have the best stems around lol even so it would hurt me at least half a meter so my clones I would start flower at 10 inches ?

I like better penetration with close clf its the trick to make it work.


lol
ok anyway bro hope the grow smokes as good as you got it gtg
happy new year
 

end_of_the_tunnel

Well-Known Member
If you have the space to go vertical a HPS is way better than a CFL anyway.
"heat" isn't an argument as HPS is more efficient.

Also if you keep the diffuser on you can use them just like your CFLs (Y splitter, horizontal orientation etc.), there are already plenty of LED bulbs that are 100 lm/w, which is 40% more efficient than any CFL.

Yes, a real size issue.
Pic is from Blynx on ICmag 8x10 watt (800 lumen per lamp) achieves 1g/w (80 gram) with his set up.
Has replaced his CFLs with LEDs after testing a 1-2 years ago or so.
You don't need much space for a nice grow.
To get 80 gram dry with CFL you need at least 150 watt, which takes up space too.


And as I've said, you don't need to remove the diffuser if your space requires them to be in different orientations.
Besides, many leds tend to be as short as CFLs are wide.
Blynx's thread is a real good read. For people good with their hands, there is always the option to deconstruct the led bulb so you just left with the little round pcb's to mount in the cabinet. One way to gain some headroom.
 

end_of_the_tunnel

Well-Known Member
Blynx's thread is a real good read. For people good with their hands, there is always the option to deconstruct the led bulb so you just left with the little round pcb's to mount in the cabinet. One way to gain some headroom.
I must add further with a caveat, to anyone interested in my above post about taking apart led bulbs. There are serious safety concerns with removing the diffuser bulb.

A wise choice would be to measure supply requirements and apply power through a suitable meanwell or similar power supply to a series/parallel array. In essence, you'd end up with a bunch of mini pucks mounted and remotely driven. Considerable savings in headroom taken up by your light can be had, if you are inventive.

Obviously, led bulbs with discrete supply components mounted together with leds on the pcba, are not suitable. These take direct mains feed, and would be a serious safety concern.

Sorry to the OP and contributors for going off topic.
 

chuck_the_noob

Active Member
I grow in 18"sqx4 ft tall box. I lifted them up off the ground so my bucket could hang out the bottom of tank. I use 4 26w 6500k lights and 1 26w 2700k bulb in the middle. I know CFL yields are not as big as LED, or MH/HPS. But I still grow an decent Automatic skittles plant.
pic 4.jpgpic 3.jpgpic 2.jpgpic 1.jpg
 
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