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Off the shelf retail store screw-in LED and CFL bulb comparisons
- Thread starter blynx
- Start date
PCBuds
Well-known member
I cut slits figuring less crap would fall through, and it takes 39 seconds with easily accessible power tools. Lol
No lumen data?
It's the lumen number we should be buying, not the power consumption. Lot's of people were getting confused by packaging quoting equivalent wattage, and couldn't tell an led apart from a compact flo. Power was total nonsence. So it was accepted that lamps should say how bright they are. Other info can be published, but the main focus of the packaging should be how bright. This bought about the renaming of lamps in some countries, such as the states.
It's the lumen number we should be buying, not the power consumption. Lot's of people were getting confused by packaging quoting equivalent wattage, and couldn't tell an led apart from a compact flo. Power was total nonsence. So it was accepted that lamps should say how bright they are. Other info can be published, but the main focus of the packaging should be how bright. This bought about the renaming of lamps in some countries, such as the states.
PCBuds
Well-known member
I checked my three bulbs and they are all 10 Watt 800 lumens, so I went to Walmart thinking of investing in some new heaters, oops I mean bulbs. Lol.
The new 100 Watt equivalent, Great Value bulbs are 16 Watt 1500 lumens and cost $12.98 for two.
The new 60 Watt equivalent is still 800 lumens but has gone UP to 10.5 Watts?? WTF?
They are $4.98 for two.
So I said forget it.
It costs me just over $10 a year to run a 10 Watt bulb 24/7.
I hope the globe is soaking up half the lumens because those numbers are crap.
Don't forget that you really can't trust those numbers (lumens) posted on the package anyway.
I remember when we first started hearing a lot more about LED tech 10 years ago, it was touted as 200,000 hours, which was quickly reduced to 100,000 hours. Then within a couple of years that number was reduced to 50,000 hours. Now I guess we're down to 20,000 hours or less.
Swanson
Member
Conspiracy time. I think bulbs are designed to burn out!! Some of the original Edison era bulbs still work. Different tech sure but that kind of durability should be somehow attainable in these modern times.
PCBuds
Well-known member
Perhaps there's some planned obsolescence going on but 20,000 hours is 2 1/4 years so if the bulb burns out before that people could return them.
The first LED bulbs I remember were just under $30 a bulb so people may be inclined to keep the receipt and packaging in case they don't last for over 20 years.
I'm sure they try to get them to fail just after their rated lifetime.
You gotta give the engineers some credit for designing them that perfectly. Lol
q3corn
Active member
Oh fixtures for GU's can get as small as 2cm, cable space included. I've checked those with the bulbs in them and definitely save about an inch in height.No, not much experience with those but they're almost the same, dimension wise, maybe will save you 5-10mm (1/4 to 1/2 inch) in height. I would check the size first, fixture included (socket) and compare with SIL, perhaps just buy one piece to check the heat output, which I think might be bigger on GU's. Or I just might be wrong..
I'm stoned after all...
Bu still recomend size and heat check, just to be sure.
I was just wondering if I should spend the dough and do the experiment or if someone else has already done so. I know they are supposed to be halogen replacements which put out quite a bit of heat. Don't know if the LED versions mimic this. *shrug*
While they did give off heat, it was not part of the design to radiate it. In fact, the reflector gave this lamp the name dichroic. It was pretty fancy. Reflecting light in the visible spectrum, but unlike alloy, passed IR light radiation straight through.
Imagine a dichroic hid reflector. Plant temps would plummet. Or even the fancier still 'hot mirror' that lets through light but reflects heat. Mirrors for specific wavelengths are used to keep the heat off actors and in telescopes, but are usually very expensive. Like.. very expensive.
Imagine a dichroic hid reflector. Plant temps would plummet. Or even the fancier still 'hot mirror' that lets through light but reflects heat. Mirrors for specific wavelengths are used to keep the heat off actors and in telescopes, but are usually very expensive. Like.. very expensive.
Hookahhead
Active member
I hope you’re proud of yourself, that looks fantastic. Even though I know it’s possible, this thread blows my mind every time I see someone grow great meds with such low wattages!!
Im'One
Active member
I moved.my lights around and added a couple cfls, now i have the home made fixture with 12 @15 watt led, 4 led sils at 5000k 8 @ 3500, 3 cfls at 2700k 4 @6500 and one 48" led @4000k. The cfls are 42 watt and rhe 48 inch led is 40 watt.
The space is 3 by 4 and im growing 4 plants , one romulan grapefruit and three dance hall.
The space is 3 by 4 and im growing 4 plants , one romulan grapefruit and three dance hall.
HorseBadoritiz
Active member
I've replaced halogens with LED GU5.3's
https://www.homedepot.com/p/Bulbrit...+br:{bulbrite}:br+dln:{541989}+qu:{771321}:qu
Even in an open fixture they get pretty hot, and not much of a spread. Plus they seem expensive... but they are so much better than halogens, lol!
https://www.homedepot.com/p/Bulbrit...+br:{bulbrite}:br+dln:{541989}+qu:{771321}:qu
Even in an open fixture they get pretty hot, and not much of a spread. Plus they seem expensive... but they are so much better than halogens, lol!
Sunshineinabag
Active member
Your lower brachts
Your lower brachts
So you had great penetration as well..
I had these produce well.....great actually but I was having issues using these lamps in free piles .....I think I'll build a board like those in the
Thread for vegging ...spacing them appropriately considering the info gleaned here.
What a great lady..... substrate?
Your lower brachts
So you had great penetration as well..
I had these produce well.....great actually but I was having issues using these lamps in free piles .....I think I'll build a board like those in the
Thread for vegging ...spacing them appropriately considering the info gleaned here.
What a great lady..... substrate?
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Im'One
Active member
