Pretty_pothead_
New Member
Are these the same as the cfl daylight bulbs. I tried post picture but it wont let me its a led daylight ge brand says 60 w replacement it says it produces 5000k-daylight
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Led daylight bulbs and cfl daylight bulbs
- Thread starter Pretty_pothead_
- Start date
Airwalker16
Well-Known Member
Yes. More blue leaning light good for veg .
Airwalker16
Well-Known Member
I thought he meant spectrum wise...
growingforfun
Well-Known Member
Im using 7 lightbulbs in the 7-13 watt range to veg a 4x4. Its going just fine. They only push 110 lm/w but its also cheap as fuck.
Pretty_pothead_
New Member
It says on the box it produces 5000k daylight so i hop it works because i cant findany cfl light bulbs anywhere
growingforfun
Well-Known Member
Slyvanna brand leds are the best off the shelf ive found
CobKits
Well-Known Member
theyre made by osram
generally i think the ratings on these are pretty solid, since they get bitchslapped by the EPA if they are found cheating Energy Star Ratings
i go for whatevers cheaper, the Great Value at Walmart and EcoSmart ones at Home depot are under $5 ea
do some simple math you should be well over 100 lumens/W (1700 lumens should use 15-16W but not over 17, 1500 and 1600 lm should use less than 15 and 16W respectively)
and while 110 lm/W seems weaksauce, remember that once you pop off the cover youre prob well over $120... and its a $5 screw-in solution that includes a decent driver and efficiency is all-in included. Theyre not a bad deal and way better than CFLs and small flourescent tubes which might not even be hitting 80 lm/W after a year. i used to use an 18W fluorescent for each clone tray, i can cover 2 trays with a 15W LED now
generally i think the ratings on these are pretty solid, since they get bitchslapped by the EPA if they are found cheating Energy Star Ratings
i go for whatevers cheaper, the Great Value at Walmart and EcoSmart ones at Home depot are under $5 ea
do some simple math you should be well over 100 lumens/W (1700 lumens should use 15-16W but not over 17, 1500 and 1600 lm should use less than 15 and 16W respectively)
and while 110 lm/W seems weaksauce, remember that once you pop off the cover youre prob well over $120... and its a $5 screw-in solution that includes a decent driver and efficiency is all-in included. Theyre not a bad deal and way better than CFLs and small flourescent tubes which might not even be hitting 80 lm/W after a year. i used to use an 18W fluorescent for each clone tray, i can cover 2 trays with a 15W LED now
growingforfun
Well-Known Member
I know im going to get hated on for this... but its what i experianced after testing so whatever.. these bulbs do better with the diffusers on for me by far. They allow a larger area to get a even level of lighting.
The slyvanna bulbs were much better than any other brand, it wasnt even compairable. Greatvalue included.
A 4 pack of bulbs was 15$
The worst brand imo was the duracell. I just threw them in the trash, along with every bulb i cut the diffusers off of.
growingforfun
Well-Known Member
With diffusers around 70 watts to light a 4x4, without the diffusers it would take a lot more. The bulbs are around 2 ft over the plants also btw.
ttystikk
Well-Known Member
CobKits
Well-Known Member
no hate, use what works for you, They are going to eat up 10% of the light but thats not the end of the world if your coverage is better. Reflectors and lenses on cobs arent far off from that
what metric makes ones better over another? ive never heard of duracell, im sure they are oem rebranded from another mfr.
growingforfun
Well-Known Member
What plants did under each one was a factor, how hot they got was another, and lm/watt. In all of those catagories the sylvanna was the best for me.
The duracell ones looked well built, cost the most, and i really thought they were gonna kick ass. Then they got so hot i couldnt touch them and didnt get as bright as the others. I dont have any fancy lab results. Just the 4 ish months i spent doing these tests for fun to get some results first hand. I realize the lumen loss due to the plastic is real, however if that focused light misses the plant all together it does nothing at all. I found the light was too focused, and it went from each plant wanting 1 or 2 bulbs at differant angles, to a few bulbs overhead covering several small plants.
@ttystikk i dont really care what you believe, and from our failure to have a convo in the other thread and you wouldnt back up anything you claimed with any explination of logic my convo with you here is the same as you treated me. Good day. I said good day sir!
OneHitDone
Well-Known Member
I pointed this out before - the diffusers on led "bulbs" in many cases play into the spectrum they output.
These are the inner and outer diffusers from a GE Reveal Bright Stick held under a Horilux Blue MH.
Look how that outer diffuser fluoresces or whatever you want to call it....
CobKits
Well-Known Member
yeah the "reveal" high CRIs are all in the diffuser at the expense of some lumens. not sure about the regular 2700k and 5000k bulbs as the diodes themselves have everything they need to make those spectra
ive got too many of these A15s laying around already but it might be worthy of the spectrometer with covers on and off
anecdotally- ive only seen one fail. Thought i was buying a "better" bulb in the $15 Cree but go figure. it was in our bedroom and started dropping diodes or phosphors or something and turned our room into a purple strobing disco party before i 86'd it
ive got too many of these A15s laying around already but it might be worthy of the spectrometer with covers on and off
anecdotally- ive only seen one fail. Thought i was buying a "better" bulb in the $15 Cree but go figure. it was in our bedroom and started dropping diodes or phosphors or something and turned our room into a purple strobing disco party before i 86'd it
CobKits
Well-Known Member
not that we didnt take advantage and get freaky before replacing it
Randomblame
Well-Known Member
As long as you take no chinese "cheapo's" from e3ay or so pretty much every LED bulb will do it. Mixing different spectra
will give a wider spectrum and you can tune it for veg and bloom if you like. But 3000 or 4000°k is also a good all-in-one spectrum because also the warmwhite LED's have still enough blue to keep the plants strong and compact! That's one difference to cfl's. Diffuser cabs can be useful if you have little space and you need to hang them directly over the plants.
Without diffusers you need a bit more distance for a good light spread.
I like the T5/T8 replacement tubes. A friend of mine exchanged six 54w T5 4 foot bulbs against six 18w LED 4ft. tubes and he was impressed by the difference. You only need to change the starter plug or simply bridge it because most LED tubes run at 100-240vac.
A few 2ft bulbs would cover a 2" 2' area pretty even and you can choose different types of diffusers and its pretty easy to remove them. The most efficient I've seen are Philips Master HO (130lm/w), but they are not as cheap like other 110/110lm/w tubes from walmart. But again, do not take chinese no-name bulbs, am4zon/e3ay is full of these inferior tubes.
will give a wider spectrum and you can tune it for veg and bloom if you like. But 3000 or 4000°k is also a good all-in-one spectrum because also the warmwhite LED's have still enough blue to keep the plants strong and compact! That's one difference to cfl's. Diffuser cabs can be useful if you have little space and you need to hang them directly over the plants.
Without diffusers you need a bit more distance for a good light spread.
I like the T5/T8 replacement tubes. A friend of mine exchanged six 54w T5 4 foot bulbs against six 18w LED 4ft. tubes and he was impressed by the difference. You only need to change the starter plug or simply bridge it because most LED tubes run at 100-240vac.
A few 2ft bulbs would cover a 2" 2' area pretty even and you can choose different types of diffusers and its pretty easy to remove them. The most efficient I've seen are Philips Master HO (130lm/w), but they are not as cheap like other 110/110lm/w tubes from walmart. But again, do not take chinese no-name bulbs, am4zon/e3ay is full of these inferior tubes.