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

[OneHitDone]

And it's not new to you, as you just responded to a post using the term right here.

Are you high, or trolling?

Come on bro, I used LED, not SEL
Over looked the Screw in part lol

 

[SandyFantasyman]

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[OneHitDone]

...and you spelled SIL wrong in your post.

The post you QUOTED used the term SIL, referenced their relative power to CFL, and pointed you to the first page with the stats.

Good luck in your journey, but I'm done with you.

Good Luck wit yo SIL's bro......

 

[Hastings]

Good Luck wit yo SIL's bro......

From this thread, it doesn't look like SIL growers need any luck! Here's my last SIL grow, 1075 grams of dried cured bud from 4 legal plants (Canada). 1.3 grams per watt using no-till organic without any added nutes. It's an improvement because my grow before that was 1.2 grams per watt. I bet if I put some effort into training, I bet I could approach 1.5 grams/watt. But I'm lazy AF, which probably explains my preference for no-till organic.

 

[Andyo]

Any pictures of the actually grow,A

 

[slomocean]

Wow, finally through the whole thread. Lots of good info here, I will experiment with wattage and distance to get my veg box down pat. It is inside and the big appeal for the LEDs is heat is almost non existent so the small fan can be so slow as to be silent in my 8x17x24" veg box. Just need to figure out seedlings....

 

[slomocean]

stick with cfl for babies if you're familiar, i do. without dimming, experience, or a meter, you're gonna fry some kids.

on the very first page of this thread, blynx reveals that capped SILs produce about 7x the directional light per watt of cfl. uncappped, 9x.

not universal or exact, but generally, this should give you an idea.

Thanks, I remember seeing that. I think I am giving them too much light/ (or just right light too close) at a young age. I can work the math and I will play with the wattages, with and without the domes, etc to compensate for the distance I have to work with and the light pattern.

 

[slomocean]

I just switched from CFL's to LED's and I'm having the same transition problems.

I had my five 10 watt LED's about 4"-5" above my seedling and bleached the leaves. They turned pale and yellow.

I raised my 5 lights for my next seedling and it worked great.


[URL=https://i.postimg.cc/0QbQJWn7/IMG_20190406_094930.jpg]View Image[/url]




It may not be stunted, just end up short, that can be a good thing in limited space.

I'm thinking your plant is getting enough light and doesn't need to grow more or bigger leaves and is instead putting that energy into root growth.
It'll grow more leaves when it needs to.

My friend had a spout under a single LED at 12"-18" and it stretched to about 4"-6" and fell over.




Your 2 lights at 10"-11" sounds about right to me (but there's that whole inverse square law thing to consider)

Watch out for bleaching and try to keep them darker green.



This is what my White Widow feminized looks like now after 7 1/2 weeks.

The lights are closer now and she seems to like it.

I'm flipping it to flower in about a week.

[URL=https://i.postimg.cc/L4QbgDDT/20190523-013703.jpg]View Image[/url]

[URL=https://i.postimg.cc/X7ZDf5D0/20190523-013729.jpg]View Image[/url]

I only have maybe 18-20" of workable height in that little veg box... I unscrewed one of those 9 watts to see how it changes. seems less watts + closer will equal same energy at some point just smaller footprint? I am playing with it all to figure it out haha. I am determined to make the LED/seedling connection

 

[PCBuds]

Apparently 1 bulb at whatever distance is the same as 4 bulbs at twice the distance.

I don't know if it's that simple or if there's other factors involved ? (like radiant heat ?)

 

[Terpene]

It is inside and the big appeal for the LEDs is heat is almost non existent so the small fan can be so slow as to be silent in my 8x17x24" veg box.

Check out Silenx PC case fans. They’re basically undetectable and flow well enough to ventilate my cabinets.

Thanks, I remember seeing that. I think I am giving them too much light/ (or just right light too close) at a young age. I can work the math and I will play with the wattages, with and without the domes, etc to compensate for the distance I have to work with and the light pattern.

In veg, you can torch seedlings with the higher wattage bulbs. You’ll want at least 6 inches (if not closer to 10 inches) of airspace off the bulbs or the kids will start to stress when they’re little. I use the “hang loose” hand gesture as a distance gauge with 12-16w leds and canopy distance. Feel free to add an inch or two past that for seedlings.

Apparently 1 bulb at whatever distance is the same as 4 bulbs at twice the distance.

I don't know if it's that simple or if there's other factors involved ? (like radiant heat ?)

If you’re concerned about the inverse square law and being too close, go buy a bunch of 3-6w units and replace the 9w bulbs you’re running for a week or 2. It should solve your problem.

 

[PCBuds]

I'm doing OK this run. I just had to raise my lights to about 2'. (it took me a while to get used to, it seems a mile away.)

slomocean only has 18"-20" to work with.
He could lose up to 12" including the bulb and fixture and end up with 6" plants.

Would he be better off with a bunch of 3-6 watt bulbs ?
How close could he get then?


How would say, four 14 Watt SIL's compare to nineteen 3 Watt bulbs installed all over the micro cab ??

 

[slomocean]

Check out Silenx PC case fans. They’re basically undetectable and flow well enough to ventilate my cabinets.



In veg, you can torch seedlings with the higher wattage bulbs. You’ll want at least 6 inches (if not closer to 10 inches) of airspace off the bulbs or the kids will start to stress when they’re little. I use the “hang loose” hand gesture as a distance gauge with 12-16w leds and canopy distance. Feel free to add an inch or two past that for seedlings.



If you’re concerned about the inverse square law and being too close, go buy a bunch of 3-6w units and replace the 9w bulbs you’re running for a week or 2. It should solve your problem.

I am clearing out abuncha old seeds, one of this one of that. Seeing what will sprout. I figure it's a good time to experiment , these are all the ones I didn't want to grow at some point because I had better choices haha. clearing them out then gonna order new stuff. I got some 6 watters yesterday so yes that's what I will do. Thanks for the input!

 

[slomocean]

Apparently 1 bulb at whatever distance is the same as 4 bulbs at twice the distance.

I don't know if it's that simple or if there's other factors involved ? (like radiant heat ?)

you can really tell that with the dome on it scatters the light more, and without there is a spot light below. I got the 2 week old directly under the light and it seems to be doing better now with one bulb. the sprouts I put to the side and the oldest seedling doubled in size yesterday so maybe too much light was the problem. One just looks weird and stringy, maybe just bad old seed or bad genetics period. I am gonna look at those diagrams again of the measurements at the different heights, it will show the gain/loss with height.

 

[slomocean]

I'm doing OK this run. I just had to raise my lights to about 2'. (it took me a while to get used to, it seems a mile away.)

slomocean only has 18"-20" to work with.
He could lose up to 12" including the bulb and fixture and end up with 6" plants.

Would he be better off with a bunch of 3-6 watt bulbs ?
How close could he get then?


How would say, four 14 Watt SIL's compare to nineteen 3 Watt bulbs installed all over the micro cab ??

In the past I have topped 2 or 3 times and tied down and then transplant into a 48oz container after a month to flower. they then go into a 2sqft box 29" high in the workshop. I been limited to spring and fall grows because of heat and cold out in the shop. I thought with SILs I may be able to make it through another grow in early summer with the lights on at night. it cools off nicely at night. Thats why the indoor small box is so handy. I can take cuttings of whats going into flower and slow grow them with low lights and 1/4 nutes until next grow time. it's kind of lazy growing but it works good for just personal smoke

 

[PCBuds]

I am clearing out abuncha old seeds, one of this one of that.

Yea, me too.

I had an unknown seed from a friend and two regular $8 seeds to plant outside.

They're not doing too damn good but I'm sure they'll get stolen from my backyard before they're done anyway.

I hope they're all boys.

They can smoke that till they're blue in the face. lol

 

[noknees]

From this thread, it doesn't look like SIL growers need any luck! Here's my last SIL grow, 1075 grams of dried cured bud from 4 legal plants (Canada). 1.3 grams per watt using no-till organic without any added nutes. It's an improvement because my grow before that was 1.2 grams per watt. I bet if I put some effort into training, I bet I could approach 1.5 grams/watt. But I'm lazy AF, which probably explains my preference for no-till organic.

thanks for checking back in.

1.3/watt in organic with a low plant count, minimal effort *(and 33W/ft!)* is very telling for people who haven't done this,

Any pictures of the actually grow,A

post 2571. https://www.icmag.com/ic/showthread.php?p=8458677#post8458677

How would say, four 14 Watt SIL's compare to nineteen 3 Watt bulbs installed all over the micro cab ??

you don't have to go quite that far. but, that's the right general idea for micro. with four heavy bulbs, you'd end up with four spots too bright and ceiling too low to use. and not much else.

 

[slomocean]

I'm doing OK this run. I just had to raise my lights to about 2'. (it took me a while to get used to, it seems a mile away.)

That's part of my problem I am so used to how close CFLs were it just didn't look right! So doing some reading I saw where a 40w led was being recommended for seedlings at 24" high, so looking at the inverse square law, if I'm understanding correctly, the light at 2 foot from 40 watts should be similar to 10 watts at 1 foot. assuming same amount of light per watt. I'm sure that's not perfect but I feel like I'm in the ball park now, about a foot away and 9 watts. the seedlings are starting to not look so weird now and wanting to grow right ... I think I was just blinding them right out of the shell

 

[psyphish]

That's part of my problem I am so used to how close CFLs were it just didn't look right! So doing some reading I saw where a 40w led was being recommended for seedlings at 24" high, so looking at the inverse square law, if I'm understanding correctly, the light at 2 foot from 40 watts should be similar to 10 watts at 1 foot. assuming same amount of light per watt. I'm sure that's not perfect but I feel like I'm in the ball park now, about a foot away and 9 watts. the seedlings are starting to not look so weird now and wanting to grow right ... I think I was just blinding them right out of the shell

Where do you even find actual 40w LED bulbs? The highest wattage I've found locally were 20w and they get hot as hell.

 

[man0os]

3 weeks in 164 w - no till.

 

[SandyFantasyman]

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