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Off the shelf retail store screw-in LED and CFL bulb comparisons
- Thread starter blynx
- Start date
BigHitGuy420
Member
Yo man that's overkill lighting on ur little plant. Its gonna bleach ur leaves. I bet that the leaves on that plant are more of a light green than a dark green.
Believe me I found out the hard way and did the same thing ur doing now. I can already see the leaves starting to curl from stress. 2 9w LEDs is plenty of light for that little plant. I have 7 way splitters and I have to hang my lights atleast 1.5-2 feet above my canopy and 2.5 feet for smaller plants like urs. If it's not warm enough then add a little space heater with an adjustable thermostat.
BigHitGuy420
Member
You get slightly better yield with more red light(2700k) but slightly better quality if u do a mix spectrum of like 60/40 red/blue. I shoot for about 75% red to 25% blue. I also run UVB reptilian bulbs for more trich production which r cfl's. 10.0 uvb
Douglas.Curtis
Autistic Diplomat in Training
I've been loving the info in this thread for some time now.
I've started an LED DIY resource thread and I'm looking for links to the good stuff on here to fill it out. Would you please step over to HERE and drop any links you've found helpful? I'm sure many of us will greatly appreciate it.
As the links are shared I'm adding them to the proper category in the original post.
Thank you so much, and please do not feed the trolls. We need a lot of good attitude in these kind of threads, there's quite a number of negative Nancy's here about LEDs.
Thank you so much.
I've started an LED DIY resource thread and I'm looking for links to the good stuff on here to fill it out. Would you please step over to HERE and drop any links you've found helpful? I'm sure many of us will greatly appreciate it.
As the links are shared I'm adding them to the proper category in the original post.
Thank you so much, and please do not feed the trolls. We need a lot of good attitude in these kind of threads, there's quite a number of negative Nancy's here about LEDs.
Thank you so much.
Yeah this troll above pulled negative Nancy off my Instagram too. You like the things I say don’t you Doug.
Anyway this thread is great...Doug’s sucks...just post here i’d Say.
I’d recommend philips hue bulbs for a slightly trick build. You can hook up like 10 lights with a dimmer remote. Or 500w with the hub and control it with your smartphone
Or just unscrew them..lol
Peace out.
watch out for Doug..he stalks people. No joke.
Anyway this thread is great...Doug’s sucks...just post here i’d Say.
I’d recommend philips hue bulbs for a slightly trick build. You can hook up like 10 lights with a dimmer remote. Or 500w with the hub and control it with your smartphone
Or just unscrew them..lol
Peace out.
watch out for Doug..he stalks people. No joke.
PCBuds
Well-known member
I decided to remove the side bulbs and unplug the 4' florescent.
I now have five 3000 K 9 watt LEDs at 18".
And I have a heater in the closet set at 68°.
I chopped up a lamp. It's not polycarbonate. I'm 90% sure it's acrylic. It's also not very diffuse. I can read through it. So it doesn't alter the beam pattern much. I then tested the diffuser a number of times, using various light sources and filter shapes over my light meter. It was costing me between 35 and 40 percent of my reading, every time. With 37% likely the mean value.
This lamp was a 1521 lumen 14w variant.
This raises an issue. The LED's would have to be 180 Lumens per watt, to allow 5% ballast losses and 37% for the diffuser. Then still produce 1521 lumens.
150 lumen/watt led's and a 25% diffuser loss pleases my calculator.
Found it.. The lamp isn't measured at 1521 it's an equivalent value. It's on the box, along with the 200 degree beam information.
Having calculated it from source and reflectivity data, then confirmed it watching practical tests, A dimpled shade drops about 20% when clean and well adjusted. Presuming one lamp and mylar walls. But the real story comes from looking at the overkill areas where the plants are not responding favourably, and the lesser lit areas. Distribution is really sucking with hids. Even if you were lucky enough to loose just 20% in reflection losses.
A CFL will suffer similar losses as it also uses reflectors. Only the LED can beam down all it's useful energy (it's losses are internal and already accounted for)
The only way I'm going to benchmark these lamps is with information from the led supplier. Everything else is too fluid. Even Lumens have equivalent Lumens. It's a step too far.
I'm quite disappointed. I really wanted to do some comparisons, but the only solid information I have is watts. I will never get to mol's
This lamp was a 1521 lumen 14w variant.
This raises an issue. The LED's would have to be 180 Lumens per watt, to allow 5% ballast losses and 37% for the diffuser. Then still produce 1521 lumens.
150 lumen/watt led's and a 25% diffuser loss pleases my calculator.
Found it.. The lamp isn't measured at 1521 it's an equivalent value. It's on the box, along with the 200 degree beam information.
Having calculated it from source and reflectivity data, then confirmed it watching practical tests, A dimpled shade drops about 20% when clean and well adjusted. Presuming one lamp and mylar walls. But the real story comes from looking at the overkill areas where the plants are not responding favourably, and the lesser lit areas. Distribution is really sucking with hids. Even if you were lucky enough to loose just 20% in reflection losses.
A CFL will suffer similar losses as it also uses reflectors. Only the LED can beam down all it's useful energy (it's losses are internal and already accounted for)
The only way I'm going to benchmark these lamps is with information from the led supplier. Everything else is too fluid. Even Lumens have equivalent Lumens. It's a step too far.
I'm quite disappointed. I really wanted to do some comparisons, but the only solid information I have is watts. I will never get to mol's
PCBuds
Well-known member
My little plant has grown a bit so I screwed in two more side bulbs.
I intend to plug the 4' fluorescents back in in a couple of days.
This plant is 4 1/2 weeks old but is supposed to be done in 8 weeks.
My last plant went 20 weeks and 4 days from seed to harvest.
This and my last two grows have been White Widow Auto-Fem.
I intend to plug the 4' fluorescents back in in a couple of days.
This plant is 4 1/2 weeks old but is supposed to be done in 8 weeks.
My last plant went 20 weeks and 4 days from seed to harvest.
This and my last two grows have been White Widow Auto-Fem.
Unfortunately, all I have is the lamps power consumption. Watts is sometimes used as a measure of radiation. From UV right up to 800nm. It's not given for this lamp I have here though. I have no information about the output, other than equivalents.
I'm putting together some info, that would of benefited from the work done here. Then benefited the thread in return. I have barely started yet, but something like..
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PCbuds, that has close nodes. I doubt it needs more light. It's looking like a mini tree already. It looks a bit upset though. Maybe it will iron itself out. Have you had a hygro meter beside it?
You can get a panel mounted one, with remote sensor, for a couple of quid. Useful for putting right beside it, without getting in the way.
No need to reply. I would rather keep to lighting really. I just thought I would say something.
El Tigre
Active member
After taking pictures from the same angle during the grow (weekly in my case), is pretty simple. Go to one "make gif online" site, upload your pictures and you have the GIF. Then upload your GIF to one "share gif online" site, get the BB code and paste on your message here. The biggest effort is to take pictures regularly ;-)
3snowboards
Active member
Well done Tigre
We will need a smoke report soon on those jars.
PCBuds.
Stop clusterfucking this thread with that seedling.
No, you don't need to fire up the 4ft flouresant fixture in a couple days.
...
Got a few of these 23w 3000k added in
Bigger in diameter of my 13w they actually run cooler
Great eagle caw caw
My 3 bubbly
(Pre98 bubba x pink mimosa)
We will need a smoke report soon on those jars.
PCBuds.
Stop clusterfucking this thread with that seedling.
No, you don't need to fire up the 4ft flouresant fixture in a couple days.
...
Got a few of these 23w 3000k added in
Bigger in diameter of my 13w they actually run cooler
Great eagle caw caw
My 3 bubbly
(Pre98 bubba x pink mimosa)
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