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

[Douglas.Curtis]

@andyo

Where you pick up the 12.5w light?

Also..anyone compiling a list of led bulbs with 1w Chips? Are feit 1w?

This thread is awesome and needs to continue, thankyouverymuch , and, I also have issues pulling data from it easily.

To help make this task a bit easier, I've started a "Known SIL Configurations" thread. I've reserved the first 3 posts, and will keep them updated when new information is posted. I'd rather the discussion keep going here, keeping my thread a simple resource.

Happy Growing!

 

[f-e]

Thanks for the quick reply. So how does this all impact photon penetration?

It doesn't. The leds are so closely grouped, that the lamp can be thought of as a single emitter.

When we use a 600 over a meter, we can argue a case that such intense illumination under the lamp, will get deeper into the canopy. It's a way of saying that over illuminating that bit isn't a waste. As what the leaf can't catch, is caught by another below.

With leds, we tend to spread the light better. We don't illuminate an area so much we light the plants under the canopy so well. Instead, we take that overload of light, and put it somewhere the canopy can use it. So while there isn't the visible light penetration of a single point source of light, we instead have a much more even canopy illumination.

I don't think the plants particularly care. The leaf catching the light isn't the one using it anyway. It's all shared around. What I do think they care about, is not getting so much light it totally swamps a leaf to the point of damage repairs being needed.

This penetration question seems to be becoming less thought about, as people stop clinging to there HID's and move over to LED's. Where many now speak of penitration in terms of multiple source lighting, being able to find all the little gaps in the canopy to slip through.

If you want to light lower leaves, put lights on the floor. I found LED cob watts on the floor did more for yield than HID watts above. This wasn't a freak result either. It was a well dialed in room, ran with and without for years.

 

[PCBuds]

If you want to light lower leaves, put lights on the floor. I found LED cob watts on the floor did more for yield than HID watts above.

On the walls too!!!

You gotta screw-in some on the walls!!!

 

[PCBuds]

It doesn't. The LEDs are so closely grouped, that the lamp can be thought of as a single emitter...

I'm sure a single 10 Watt led light source would fry my seedling.

Even if it's only 80 lumens per Watt.
(my bulbs are old. Lol)


I prefer to spread the light...

 

[Legalcdn]

It doesn't. The leds are so closely grouped, that the lamp can be thought of as a single emitter.

When we use a 600 over a meter, we can argue a case that such intense illumination under the lamp, will get deeper into the canopy. It's a way of saying that over illuminating that bit isn't a waste. As what the leaf can't catch, is caught by another ....

Thanks F-E. Great info there..

I have 7 in 1 adapters to light from below. I will get them going..

I have 2-3 weeks left...i am in week 9 now..

 

[PCBuds]

 

[Legalcdn]

I attached 7 10w 4000k bulbs.. 2-4 weeks left. 450w total.

 

[cadavruslos]

250 w pannel

250 w pannel

 

[repuk]

legalcdn she looks beautiful! Zam crosses though can be really capricious with their branching!

 

[Legalcdn]

legalcdn she looks beautiful! Zam crosses though can be really capricious with their branching!

So true. I started on a flood table and the stretch made it impossible to keep at top height. I had to remove table and supercrop and tie horizontal. I know better next time for ace malawi, panama, and bangi haze.

I went to 10/14 light sched based on Zam and Old timer haze thread.

Sativas are special.. bud structure is different..more white hairs still at top..hairs fading lower to middle area.. can't be bleaching as they are 6-7 inch at top and lower are further away.. hoping for finish at w12-14.

 

[Legalcdn]

View Image View Image View Image

Those are powerful led diodes..1w i think..11 or 12 chips for 14w? Strong..EU right?

 

[H G Griffin]

Love this thread. Changed everything for me about a year ago. Been growing under SILs in all my spaces since then and the adaptability and low cost are second only to the quality of weed they've produced.

 

[f-e]

On the walls too!!!

You gotta screw-in some on the walls!!!




[URL=https://i.postimg.cc/k4KBRHbS/20190516-213351.jpg]View Image[/url]




[URL=https://i.postimg.cc/rF3gWpsr/20200308_165001.jpg]View Image[/url]

Yes man, light them up everywhere. Interlighting is a thing to. Lights actually within the plant. Though with our sticky ladies, that's probably not viable.

Running a scrog, I found uplighters in veg grew an unbelieveable amount of lower foliage, that needed chucking away. So they are only used in flower, and still beat the HID top lighting, watt for watt.

If we look at charts, we see a plants use of light is more efficient at lower levels of illumination. A leaf can only do so much with the light and co2 available. As an extreme example, if you light half a plant at 1000ppfd you have lost 20% of your light entirely. A third of whats left is in to that curve of diminishing returns. But if you light an entire plant at 500ppfd then you are barely co2 limited at all. You could in fact be a third better off. Not just a 5th from that lost 200.

Now obviously if you have 500ppfd up top, there is no point moving some down. You probably have a lot of unlit plant though. Growing bits of bud you just want to chuck away. It doesn't take much to make these bits of (perhaps illegal) plant, into something worth having. Outdoors where a plant is evenly illuminated, every branch gets to grow a nice bud. I'm not suggesting I see that with 100w a meter of uplighing, but there is nothing you don't want to trim

 

[Medfinder]

Chemon..91...15watt 1600 lumen 2700k

Flower onset...

 

[cadavruslos]

Those are powerful led diodes..1w i think..11 or 12 chips for 14w? Strong..EU right?

Yea , Eu ! Eastern Europe brother !

 

[Sunshineinabag]

these posts are so AWESOME GUYS!

these posts are so AWESOME GUYS!

Cant cha see? cant cha see? what these sils have done to meh?

https://youtu.be/GZZ7cogovrY


Found this guy in my grow area outdoors.......

 

[Sunshineinabag]

i love sils

i love sils

I need to get off my lazy ass and come up with a build to show off here, we all dripping with ingenuity.

we are WINNING
https://youtu.be/6PTlbHtq7cw

 

[bajson]

Ak47 autoflower grown under some e27 10w/1000 lumen 2700k with the globes removed. Day 66 since sprout.

 

[Im'One]

What color light is best for clones before they root? After?

 

[Legalcdn]

What color light is best for clones before they root? After?

Some say 4000k..5000k..6500k... in the end..just light.. i have cloned with 3000k..4000k..same thing.. don't fry the plant with too much light.

I use mini bubbler to clone.


Water, light, air, and love.. peace

Good luck..