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

Hookahhead

Active member
We used to dare each other to stick our fingers in a lamp socket as a kid. It only ever gave us a good jolt, never knocked us on our asses.

Had I plugged in my light without insulating the boards, most likely I would have just made some sparks, smoke, and toasted the circuitry. I never hold on to the fixture when testing, and always use a fused surge protector. Also I posted the setup before finishing the wiring, which is how PCBuds caught my mistake. So even though I created something unsafe, the risk was mitigated by various safety checks...

I wired my own MH ballast many many years ago. In my opinion that was much more dangerous than a few SILs strung together.
 

PCBuds

Well-known member
We used to dare each other to stick our fingers in a lamp socket as a kid. It only ever gave us a good jolt, never knocked us on our asses.

Had I plugged in my light without insulating the boards, most likely I would have just made some sparks, smoke, and toasted the circuitry. I never hold on to the fixture when testing, and always use a fused surge protector. Also I posted the setup before finishing the wiring, which is how PCBuds caught my mistake. So even though I created something unsafe, the risk was mitigated by various safety checks...

I wired my own MH ballast many many years ago. In my opinion that was much more dangerous than a few SILs strung together.


Exactly!!
I still stick my finger in light sockets...
I'm gonna get juiced up and do it again today.

I didn't save your life.
I just helped you tweak your design.
 

MdNewgrower

Active member
Built a new cloning/veg box, since I decided to try my hand at cloning of Sensi Northern Lights. Success! 4 of 4 rooted, 1 far faster than the others. Using five 8.5w 5000k SILs in the veg area, and one of the same(still wearing its globe) for rooting(with clone tray above the 5 downward facing lights for root warmth).

I've got about 25w per square foot. Is the consensus that this is enough light for veg? I am around 42.5w per square foot in my flower box, which is just over 5 weeks in from 12/12.
 

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Swanson

Member
I think that's lots of light for vegging plants! I just vegged two briefly under a single 11w SIL and was happy with growth.
 

ScrogMonster

Active member
Veteran
I got my light finished.
[URL=https://i.postimg.cc/Nj3S58zr/20200305-105830.jpg]View Image[/url][URL=https://i.postimg.cc/g035RwCt/20200305-110525.jpg]View Image[/url]
[URL=https://i.postimg.cc/Sx2HS1Dh/20200305-114148.jpg]View Image[/url]
I wanted to keep everything as low profile as I could
[URL=https://i.postimg.cc/G2rfjLrL/20200305-121131.jpg]View Image[/url]

[URL=https://i.postimg.cc/rFYvL2Gj/20200305-121257.jpg]View Image[/url]

The fixture is drawing 61 Watts and the bulbs are rated 800 lumens so with the globes removed, I should get about 35% more light, so my fixture should have a total of about 6,500 lumens.

Beautiful fixture, very nice PCBuds thanks for making that and sharing, I like how you threw the wires together I will probably use that method. Lovely.
 

ScrogMonster

Active member
Veteran
Well I clipped the little metal parts coming out of the center and now the bulb doesn't seem to work


[URL=https://www.icmag.com/ic/picture.php?albumid=82503&pictureid=2015638&thumb=1]View Image[/URL]


What did I fuck up?

Woops heh. I’m sure you’ve already figured it out but the bulbs you have were made differently. Instead of the metal prongs sticking out like tasers yours are bent down flat to the side and soldered down which is really nice because you get to skip the step of clipping them and just put tiny bit of silicone over it. :biggrin:
 

ScrogMonster

Active member
Veteran
I just posted this in my thread but I wanted to post it here too. It doesn't have much to do with SIL's other then it being done with SIL's as the light source. It's pretty interesting though.

So I was playing around and discovered an interesting new grafting method... check 'er out.
I think this might be how people do approach grafting sort of only I used a cut instead of another plant.

I took a small clone sized cutting and shaved one side of the bottom of the stem about a RW plug's length 1 1/2" maybe. Then I shaved about the same amount off of the side of a much thicker branch on the host. Slapped them together, secured it first with a piece of scotch tape to hold it in place then went around the whole thing with grafting tape. I wanted to find a way to graft with out the need for a bag to hold humidity. My thinking was if there's enough surface contact for the host to share its juice with the cutting the cutting wont wilt enough to die, and it worked!

The other nifty thing about this grafting method is that you don't have to remove the top of the branch from the host. So if the graft doesn't take your host branch would be pretty much be unharmed by the attempted procedure. I'm willing to bet that you could secure a second scion to the other side of a branch as well... it may be possible that 4 scions or more could be grafted onto the same spot around the right size branch of a host.

picture.php


woops this next pic is upside down but you can still see whats going on.
picture.php


Here's a picture of the connection with the grafting tape removed that shows that first piece of stabilizing scotch tape.
picture.php


Here's the graft site with everything removed.
picture.php


This graft attempt failed because there was way too much light hitting the scion but this picture shows pretty well what the method is. Only difference is that I would double the amount shaved off of the scion and the host. With a good 1 1/2" shaved off both there's a lot of juicy surface contact.
picture.php
 

noknees

Member
Built a new cloning/veg box, since I decided to try my hand at cloning of Sensi Northern Lights. Success! 4 of 4 rooted, 1 far faster than the others. Using five 8.5w 5000k SILs in the veg area, and one of the same(still wearing its globe) for rooting(with clone tray above the 5 downward facing lights for root warmth).

I've got about 25w per square foot. Is the consensus that this is enough light for veg? I am around 42.5w per square foot in my flower box, which is just over 5 weeks in from 12/12.


i've vegged that girl many times around 15W/ft with very similar bulbs. she's not fussy. her N needs are low and she'll finish quickly! make sure and give the buds a long cure. :)
 

Andyo

Active member
Veteran
light height 12.5 w sils 35w sq/ft

light height 12.5 w sils 35w sq/ft

Im not sure what height to have my sils for flowering ?.
The thing is 12.5 w 4000k sils with 13 chips near as 1w chips i assume higher than 24 chip 12.5 w sils
 

Legalcdn

Well-known member
@andyo

Where you pick up the 12.5w light?

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

Legalcdn

Well-known member
Thanks..

I am looking for north american compatible bulbs with close to 1w chip sets like that sylvania.

Feit or phillips have any 12-16w bulbs with low chip count? My ecosmart and luminous brand are as bit weak (.2w - .3w per chip)
 

f-e

Well-known member
Mentor
Veteran
5 chips at 0.2w each, isn't any less light than a single 1w chip. On the whole, the lamps using more LEDs are the better ones. We have shifted from the simplicity of energy dense cob lighting, to the better thermal control of 0.2w arrays such as the industry dominant Samsung LM301. Although we still drive them hard with 0.5w in most designs.
Some of the multi-chip designs really are bad though, using loads of power to achieve the light levels these are actually designed to produce. The 1500 lumen standard lamp (old 100) might consume as little as 12w, with 14w being typical. But bargain store lamps might consume 16w or more to meet that 1500 lumen output standard.

A brand name might use 10 good leds, because it's less failure points. There is brand image to uphold. This won't be the most efficient design though.
I expect about 20 LEDs in a 1500 lumen lamp. But more importantly, I expect no more than 14w to be used making that 1500 lumen. We have been able to do that for years, so if what's on the shelf can't it's properly outdated
 

Legalcdn

Well-known member
5 chips at 0.2w each, isn't any less light than a single 1w chip. On the whole, the lamps using more LEDs are the better ones. We have shifted from the simplicity of energy dense cob lighting, to the better thermal control of 0.2w arrays such as the industry dominant Samsung LM301. Although we still drive them hard with 0.5w in most designs.
Some of the multi-chip designs really are bad though, using loads of power to achieve the light levels these are actually designed to produce. The 1500 lumen standard lamp (old 100) might consume as little as 12w, with 14w being typical. But bargain store lamps might consume 16w or more to meet that 1500 lumen output standard.

A brand name might use 10 good leds, because it's less failure points. There is brand image to uphold. This won't be the most efficient design though.
I expect about 20 LEDs in a 1500 lumen lamp. But more importantly, I expect no more than 14w to be used making that 1500 lumen. We have been able to do that for years, so if what's on the shelf can't it's properly outdated

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

I have 315w

I personally need to flatten my canopy to gain better light distribution as mentioned lots in this SIL thread. Might scrog in the future as i have labelled my 2 zam x old timer haze "wild child"

Week 7

picture.php
 

Swanson

Member
Nice looking setup and sativas legalcdn!! I suspect a big yield come 13 weeks or whatever they will take. You could do some defoliation and tying down for light.
 

Legalcdn

Well-known member
I will build a diy scrog attached to square buckets for portability next month and finally install diy autowatering. Used the stanley blower thread for venting with inkbird 308 for heating and cooling. I can ramp up to 525w over a 36x60 area but i keep temps down with 315w over a 36x48 area.
So far..plants look good with a megacrop/cal-nit/epson salts/greanleaf bud explosion cocktail.. jacks 5-12-26 on the way..
 

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