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

[JohnnyChicago]

I keep my 20.5w/2550lm/6.5k led bulbs at 15cm from my seedlings and they feel great

 

[HuffnPufferfish]

but with 12 bulbs per 80x80 (almost a meter) you wont have any light overlapping at 15cm

 

[led420]

Thanks for this awesome thread!
Anyone find any good screw in led bulbs on aliexpress/dhgate?
Are these ones any good? 15w 1150lm
Want to setup a 3draw dresser cab

 

[HuffnPufferfish]

those trash lol

 

[slevin_]

but with 12 bulbs per 80x80 (almost a meter) you wont have any light overlapping at 15cm

Hi HuffnPufferfish, and you think it's better at 20cm for have overlapping?
Sorry for the "stupid" question but i'm not a Einstein of led

 

[chronosync]

sup people! hows everyone?

Here are some photos of my mini tent. I finally got around to putting it together and Im really digging it, hopefully you guys do too. Any pointers you have of course I'm open to suggestions. They got flipped about 5 days ago.

-Cheers

 

[chronosync]

also interested in how spacing affects how the light is delivered but really only if it matters to the plant, right? Ive noticed some weird stuff with a few of these bulbs while filming on my phone camera. four of my warm bulbs appear to pulsate while being recorded, they pulse in time with the scrolling bands, I thought that only happened with HPS, hmm. Its the 2700k bulbs that are pulsing the other two warm bulbs I have dont create that effect but are rated at 3000k

Ive got 12 x 9w bulbs spaced at 6" on center

 

[slevin_]

Now i can post some pic of my actual grow in 80x80cm GB whit new panel (216w) DIY whit led bulb.

The new entry, it's a perpetual 12-12 for me this run. I continue this for 7 month i think. Every month i cut 3 plants, in this time other 3 plant are in veg.

Hi to all, hope you like

 

[jonhova]

Perpetual in one tent is really smart!

 

[slevin_]

Perpetual in one tent is really smart!

Thank you Jonhova, unfortunally i have only one tent for now, and i can do only this, i try to divide the space for have everithing.

I can't wait 3-4 months for only 4-5 plant, i prefer have 3 plants every months in perpetual.

The arvest it's lower but continuous

 

[IndiGio]

My Box+3rd day of Strawberry banana!for now runs just 3 10w bulbs of 3000,4000,and 6500 K and i bought these «movable arms» to concentrate the light in the first stages.Probably in the summer some changes in the air system will be required

https://www.icmag.com/ic/attachment.php?attachmentid=449356&stc=1&d=1520856596

https://www.icmag.com/ic/attachment.php?attachmentid=449357&stc=1&d=1520856596

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https://www.icmag.com/ic/attachment.php?attachmentid=449359&stc=1&d=1520856596


https://www.icmag.com/ic/attachment.php?attachmentid=449361&stc=1&d=1520856873

https://www.icmag.com/ic/attachment.php?attachmentid=449360&stc=1&d=1520856873


https://www.icmag.com/ic/attachment.php?attachmentid=449365&stc=1&d=1520857063

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https://www.icmag.com/ic/attachment.php?attachmentid=449363&stc=1&d=1520856873

 

[repuk]

Be careful with that seedling, looks like you're going to cook it?

 

[IndiGio]

Be careful with that seedling, looks like you're going to cook it?

Doesn't look but thank you,grows fast and healthy i had the same fear but has received 48h of light in the beginning yet and i control it frequently.This night as you can see i cut the glass.

https://www.icmag.com/ic/attachment.php?attachmentid=449366&stc=1&d=1520860620

 

[repuk]

Really cool Goosenecks idea! I considered it for my COBs but didn't think about it for SILs...

 

[Koondense]

I think it's too much light for a seedling, I only use two lights like this for seedlings and early veg, no need for more on an area like yours. Use all 5 lights in flowering.

Cheers

 

[warpese]

I think it's too much light for a seedling, I only use two lights like this for seedlings and early veg, no need for more on an area like yours. Use all 5 lights in flowering.

Cheers

hi at all, I agree with koondense. in this moment i think 1 single bulb is sufficient. my 2 cent


anyway there's a lot of excellent works in this thread.
congratulations to everyone

 

[IndiGio]

Thanks to everyone ,we are awesome!

 

[IndiGio]

I think it's too much light for a seedling, I only use two lights like this for seedlings and early veg, no need for more on an area like yours. Use all 5 lights in flowering.

Cheers

Koondense thank you.Yes you are right but i wouldn't go under two bulbs because in the past grow i saw that with one the strecht was too much.

 

[Koondense]

Right, a lot depends on light positioning, you need an even spread with enough intensity to prevent stretching, which also seems to occur more under lights with lower K temperature.

Cheers

 

[HuffnPufferfish]

yeah the pic with the leaves pointing up, is heavy stress