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Off the shelf retail store screw-in LED and CFL bulb comparisons

PCBuds

Well-known member
No, it's not like that at all. I'm thinking of going back because I think I got better yields! Those 23 watters are only good for vegging as I recall.

I did use CFLs in my closet to flower but I don't know about my yield.
I don't keep very good notes. (none at all really, ... except for this forum. Lol)

I found these on Amazon...
Kinda steep for one bulb.

 

Jellyfish

Invertebrata Inebriata
Veteran
i'll vet this to some extent
bud density with cfls can be killer dense
trade is more distance adjustments, but get 'em close and buds respond
still, for wattage leds give better yields


Wattage, schmattage, we're talking about a closet operation, six plants in flower. I'm not using a lot of electricity.

You're right, there's more distance adjustments, but that's a good thing! With LED's, you can't get them as close to the plant tops, so headroom becomes an issue. You need minimum 18 inches from light to plant tops with LED's, and with CFL's, you can get down to two, three inches. So that's potential 15 inches headroom you lose going from CFL's to LED's.



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PCBuds said:
I did use CFLs in my closet to flower but I don't know about my yield.
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PCBuds said:
[FONT=Arial, Helvetica, sans-serif]I don't keep very good notes. (none at all really, ... except for this forum. Lol)[/FONT]
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[/FONT][FONT=Arial, Helvetica, sans-serif]I keep some notes, and I think I'm right.
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igrowone

Well-known member
Veteran
Wattage, schmattage, we're talking about a closet operation, six plants in flower. I'm not using a lot of electricity.
[FONT=Arial, Helvetica, sans-serif]...[/FONT]
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no argument there, small grows and cfls an excellent match
fluoro spectrum is a sweet spectrum
 

noknees

Member
Wattage, schmattage, we're talking about a closet operation, six plants in flower. I'm not using a lot of electricity.

You're right, there's more distance adjustments, but that's a good thing! With LED's, you can't get them as close to the plant tops, so headroom becomes an issue. You need minimum 18 inches from light to plant tops with LED's, and with CFL's, you can get down to two, three inches. So that's potential 15 inches headroom you lose going from CFL's to LED's.


[FONT=Arial, Helvetica, sans-serif]I keep some notes, and I think I'm right.
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100% hear ya. seems to me grams/m2 is a more appropriate efficiency measure in micro.

as far as reduced yield due to lower ceiling, that sort of goes hand in hand with smaller root mass too, no?

to me, it's all about using the right tool for the job.

could also just come down to experience. :)
 

PCBuds

Well-known member
Wattage, schmattage, we're talking about a closet operation, six plants in flower. I'm not using a lot of electricity.


Me either.
I thought I was just wasting electricity with my 4' flouro but the plant seemed to love it.

One if my colas wrapped right around my tubes and just soaked up the sunshine. She melted some trichs onto the tube but didn't burn.







You're right, there's more distance adjustments, but that's a good thing! With LED's, you can't get them as close to the plant tops, so headroom becomes an issue. You need minimum 18 inches from light to plant tops with LED's, and with CFL's, you can get down to two, three inches. So that's potential 15 inches headroom you lose going from CFL's to LED's.


I start my LEDs at 21" from my seedling but they grow into and get used to the light and I can get 2"-3" away when they are mature.



With the globes on, I can put them right in the plant.

 

PCBuds

Well-known member
You may well be right...

I like how there is many ways to do it right and wrong (I tend to focus on the wrong way, Lol 😆)


Unfortunately, I've just gutted my 4' flouro to make room for my new LED strips.




I left the flouro carcass there because it's white and I don't want to buy more Panda film. Lol 😆)
 

Jellyfish

Invertebrata Inebriata
Veteran
[FONT=Arial, Helvetica, sans-serif]I start my LEDs at 21" from my seedling but they grow into and get used to the light and I can get 2"-3" away when they are mature.[/FONT]


That's good to know! The LED's I'm referring to are the panel kind (Viparspectra), so like I said, 18 inches is pushing it for those. How many of those bulbs would you say one would need for a 3 X 4 foot footprint?


 

PCBuds

Well-known member



That's good to know! The LED's I'm referring to are the panel kind (Viparspectra), so like I said, 18 inches is pushing it for those. How many of those bulbs would you say one would need for a 3 X 4 foot footprint?



I don't really know.

My closet is about 21" X 21" so around 3.5 square feet?
But it has about 4' walls.

I have five 10 Watt SILs mounted from above that is easy to move up and down.

I also have twelve 10 Watt SILs mounted to the walls which really seem to help.



I'm in the process of installing 24 one foot long LED strips on the walls with only 4 two footers up top.

I don't believe in square feet.
Plants aren't flat and I don't think the lights should be either.

I prefer cubic feet.
 

ScrogMonster

Active member
Veteran
Ahh, Crap...

I've got 26 LED strips rated 3,500K.

I'm more than willing to rely on your observations as far as what works best.

Who knows I could swap out all my 5000k SIL’s for an equiv amount of your 3500k strips you just got and they might very well grow even better. I’m sure they’ll grow fine buds. That’s supposed to a sweet spectrum too. Too many cats out there that need skinnin’ lol.
 
E

ESTERCHASER

read the thread

read the thread




That's good to know! The LED's I'm referring to are the panel kind (Viparspectra), so like I said, 18 inches is pushing it for those. How many of those bulbs would you say one would need for a 3 X 4 foot footprint?



your awenser is in the thread, might wanna go back and read some....
 

ScrogMonster

Active member
Veteran
Another good look at the weird ropey/stretchy/purple GG. Sorry some pics are upside down. Not gonna fix it. Too busy.
picture.php


Sexy BG cola.

picture.php


Smallest BG plant finished. Hacked it first.

picture.php


BG from the screen. Some of those dead leaves inside the colas did end up causing just a bit of mold. Only probably lost about a quarter ounce at most though!! Not bad! Phew! I was scared when I saw the first sign but thems good numbers.
picture.php


Another chunky ass BG nug. I keep saying it but using all 5000k did not seem to limit mass/fatness!

picture.php


——————————————————————
The preceding post was one of several updates in my thread in my signature, come on by and have a little looksy.
 
E

ESTERCHASER

you dont whole hang your plants to dry? interesting! that first pic is foxtail city man well done
 

blynx

WALSTIB
Moderator
ICMag Donor
Veteran
Nice harvest!
I've found the 5000/6500k bulbs produce nice flowers but they just keep throwing out new growth in the form of white hairs on the buds at the end of flower. You can see it on a bunch of your buds.
 

ScrogMonster

Active member
Veteran
Nice harvest!
I've found the 5000/6500k bulbs produce nice flowers but they just keep throwing out new growth in the form of white hairs on the buds at the end of flower. You can see it on a bunch of your buds.

Thanks Blynx! 100% the BG did that the most. Made it tricky to tell when they were done but I took em all around 9 weeks. I wish I had taken them a few days earlier though, at least the tangelo. A couple Tangelo buds got some burnt looking spots on little leaf tips and calyxes, a few days before that they were perfect and beautiful.

I noticed the buds that were further from the bulbs maybe a good 8-10inches away at least did way less if any of that throwing new hairs business. I’ll probably try to back the bulbs off to that distance if I can during the last week or two from now on. Maybe that’s where I should have the bulbs in the first place :thinking:
 

ScrogMonster

Active member
Veteran
you dont whole hang your plants to dry? interesting! that first pic is foxtail city man well done

Thanks EC, yeah I’m thinking it was a lot hotter for that foxtailed GG#4 because it was in the middle and the GG next to it was right below the air extraction duct. I should have put a fan in each tier for extra circulation. Will do from now on.

Why don’t I hang em whole? 1) I need this harvest too be ready for use more on the sooner side. 2) I have some slight OCD tendencies (not really but maybe) that have me wanting the buds all hanging in coulombs on screens heh. Also I cut a branch off and do a rough trim where I take off anything that isn’t frosty so when I do the final trim it’s all good to keep for processing. Then I hang that branch/bud. It’d be harder to that while keeping the plant whole.
 

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