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

[Bird of Hermes]

Also how well do these work for vegging? I'm wanting to replace my cfls and wondering what everybody's experience has been using these since this thread was started. I'll look through the thread again but it's pretty long lol and figured I could get some easy input by just asking.

 

[Bird of Hermes]

Read back a few posts and one of you are saying 35w per square ft is that what I should shoot for? If so maybe it was too much light intensity because I was running around 75w a Sq ft when I had the light burn issues. It was definitely light burn too not a nute burn or deficiency

 

[Bird of Hermes]

I'm talking actual wattage too not equivalent

 

[Bird of Hermes]

Read some more of the thread and see where terpene is saying 20w per square ft in veg and 30w in flowering. I'm gonna swap my cfls out and give that a try the plants that burned had just switched to flower and had been under cfls before so maybe it was too much light then they were used too. Will give this a go for vegging and then maybe run a side by side comparison during flower with a 400w eye hortilux

 

[Bird of Hermes]

If it goes well I'll be more then happy to retire the has

 

[Bird of Hermes]

Hps* damn autocorrect

 

[argo430]

I tried using these awhile back and had some light burn issues. Area was roughly 8 sq ft and had 30 15w phillips 2700k screw in leds and 10 15w 5000ks covering that area. The lights were around 6 to 8 inches above canopy level. After getting the burn i swapped back to hps but am still interested in using the screw in leds. Was this a case of too much light, too close to the canopy or a combo of both? If so whats the reccomended amount of lights per sq ft and what height should they be at if it was too close? Thanks for any advice

400W is a shit load for 8 sq ft but 600 W sounds like something i would do. I heard 30 W sq ft is pretty good. 240W so I am guessing Photon over load.


I had some burn problems from having the lights too close but i had them ridiculously close 2-3". Then i sprayed like a moron , a couple of days later major burn like compleatly thru the leaf. I only use the cheap 10 or 9.5 W bulbs from the big box store. with the bigger wattage ones might be for spot lights and have a narrower beam angle .

 

[argo430]

here was the veg of my current flowering plants one 2x2 tray lit with 160 W in 10Watters

This is what i burned them with

 

[Bird of Hermes]

Nice setup Argo yeah I think you're right it was too much light the burn pattern looked exactly like the pics of light burn I see online and was burned more closers to the lights. I'm doing side by side comparisons of vegging with cfls and leds at 20-30 watts a Sq ft and raised to 12 inches above the canopy. Only been a day but looking good so far. I'm gonna try to maintain a 12-18 gap above the canopy with both the leds and hps from now on and see if things go better. Thnx for the input

 

[Bird of Hermes]

Might setup a micro cab grow and run a girl side by side with my larger cabinets and see how she compares to her hps sisters in flowering.

 

[seedlingstarter]

Hi guys!!!
My little test goes on, now with 5bulbs 9w 6400°k and 4bulbs 11.5w 2700°k.

in a few days I will change to 12/12, removing some 6400 ° k light bulbs and adding more 2700°k.

With pleasure I share with you some photos of my plants.

CBD Therapy 4wayLST

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Greeting to all LedBulbs lovers.

Shaki are you running a carbon filter? I just bought a small 2x2x3 tent when I purchased the carbon filter I didn't know it was so big, I have it sitting on the floor in the tent and takes up a good amount of space. I see your vent hose but no filter is it on the outside of the tent?

 

[mexcurandero420]

Hi guys!!!
My little test goes on, now with 5bulbs 9w 6400°k and 4bulbs 11.5w 2700°k.

in a few days I will change to 12/12, removing some 6400 ° k light bulbs and adding more 2700°k.

With pleasure I share with you some photos of my plants.

CBD Therapy 4wayLST

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Greeting to all LedBulbs lovers.

Why combining 6400 K with 2700 K?

 

[El Tigre]

Strain Green Poison FV (Sweet Seeds)
Buds flowered 58 days under 78W (6 x 13w led bulbs 3000 k)

 

[ReikoX]

Growing these two for the party cup challenge under 86-watts (4x 21.5watt) off-the-shelf LED. The strain is an auto I made, Lowryder x La Diva. They are seven weeks from seed.

 

[unregistered190]

How do you keep them cups from falling over? Nice colas and good luck on the challange

 

[ReikoX]

How do you keep them cups from falling over? Nice colas and good luck on the challange

They are being watered 3x a day, they never dry out so the weight holds them down. I did throw one [accidentally] across the room, but it barely noticed.

 

[Bird of Hermes]

They are being watered 3x a day, they never dry out so the weight holds them down. I did throw one [accidentally] across the room, but it barely noticed.

Lol how'd you accidentally throw it across the room? Poor baby glad to hear she wasnt hurt

 

[seedlingstarter]

Hi psyphish,I 've used 2700k in flo and they were fine.

3 weeks from seed for the bigger ones,they've been topped,tied,crushed .First time vegging with the screw-ins and I can say I love them,with my 400 w MH temps would have been unbearable these 3 weeks...Also good side branching and minimal internode stretch,mostly sativa strains.In flo I will probably use both HID and screw ins.
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Hey Syd I have the same set up can you tell me how you have the lights mounted in there at the moment I have the cord wrapped around the bars at the top but doesn't seem safe

 

[ReikoX]

Lol how'd you accidentally throw it across the room? Poor baby glad to hear she wasnt hurt

LOL taking it out to water it. Turned around and lost my grip. She went tumbling "ass over tea kettle". Still finding bits of perlite in the bud every now and again. Thats ok, it just adds to the weight.

 

[DunHav`nFun]

Growing these two for the party cup challenge under 86-watts (4x 21.5watt) off-the-shelf LED. The strain is an auto I made, Lowryder x La Diva. They are seven weeks from seed.
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How long till finish bro.....those are awesome....They`d get my vote.....is that coco and perlite you`re feeding 3 times a day ?....anyways.....

Good work and good luck.....

Peace.....DHF..........