Led Users Unite!

No those aren't valid comparisons, liters is volume, not distance (as I'm sure you know, but this sounds like another post about density, so please stop there, lol). Lux is a measure of light intensity, and while a direct conversion to micromoles per second would not work, you're at least in the same ballpark. The dude was referring to the intensity, lux gives you "a rough estimate of strength" based upon this intensity, and will allow you to properly gauge the level of light your plants are receiving at different points in the garden. You can use this info to optimize your lighting. If you did know based upon your specific light how this lux value related to the ppf, you would certainly be better off, but I'll share that at at about 3' the Blackstar is at ~3k lux with nice vegging happening, but 3k lux in HPS would cause a grip of stretch. Since they weren't trying to argue any points with the terminology, they should be cut slack

TshirtNinja said:

No I won't go easy because its not a proper measurement for plants AT ALL. Lumens or LUX don't relate to the photo reception from the plant at all. Those 2 measurements are made to determine the intensity of light for the HUMAN eye. Lumens for HUMANS still bro. Thats like using liters to measure running distance. Yo man I ran 14000 liters today bro and it was KILLER!

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meharmon said:

No those aren't valid comparisons, liters is volume, not distance (as I'm sure you know, but this sounds like another post about density, so please stop there, lol). Lux is a measure of light intensity, and while a direct conversion to micromoles per second would not work, you're at least in the same ballpark. The dude was referring to the intensity, lux gives you "a rough estimate of strength" based upon this intensity, and will allow you to properly gauge the level of light your plants are receiving at different points in the garden. You can use this info to optimize your lighting. If you did know based upon your specific light how this lux value related to the ppf, you would certainly be better off, but I'll share that at at about 3' the Blackstar is at ~3k lux with nice vegging happening, but 3k lux in HPS would cause a grip of stretch. Since they weren't trying to argue any points with the terminology, they should be cut slack

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Hey who hear actually has a way of testing this? I would test my LED if I could but I recently lost my job and have no money for new grow stuff
I've never heard much about LED lumens/lux levels compared to HID except from 2 year old posts with old LED tech, my 395w seems brighter than my 400w Hortilux Super HPS on a digital ballast.

so I just started to harvest my first grow ever and I wanted to save some money so I did with LED'S and I wasnt disappointed I had a 4x4 closet with two ufo's and two wall led panels I tought I was crazy because I was growing four plant. It was really pack in there but the leds seem to do the job. One advantage is that it didnt get really hot in there so it was easy to control the temp. Now, I dont know if I should keep using all the LED'S for the drying part or take some light away and, do I keep the same light cycle???

WWShadow said:

Light Emitting Diodes have been around since like 1920 or so. The technology is only just now getting to the point where they can really compete with HID. Theson it has taken so long is that now one ever really explored the potential of LED's. And even now LED's are still letting People down in the flowering phase. Well with one exception, the Kessil H150 is extremely powerful. I've seen on grow on here that was really great. I think it was Grumpy old dreamer, something like that. Now Kessil has come out with the H350 Spectral Halo in purple and Magenta. I don't know if they are going to do solid blue or red yet. Does anyone get their newsletter? look at the comments from buyers of the H150. IF the Halo is as good for it's size as the H150 is then that is great but $400 + a pop is still expensive.

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I didn't know that any of my grows were good enough to be used as an indicator - I'm still perfecting my method, using the cheapest nutes and a single light.
Once I have sufficient grows completed to know the most I can get from cheap ass nutes with a single light, then I will experiment with "better" nutes ... but at the moment my set-up is producing more than I can smoke which is allowing me to collect a nice selection of different buds - variety is the spice of life.

jdizzle22 said:

Hey who hear actually has a way of testing this? I would test my LED if I could but I recently lost my job and have no money for new grow stuff
I've never heard much about LED lumens/lux levels compared to HID except from 2 year old posts with old LED tech, my 395w seems brighter than my 400w Hortilux Super HPS on a digital ballast.

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saw a thread on an image board where dude had a quanta meter for checing hid and led

300w true led = photon density of 1,000w hps in a hood

marijane89 said:

so I just started to harvest my first grow ever and I wanted to save some money so I did with LED'S and I wasnt disappointed I had a 4x4 closet with two ufo's and two wall led panels I tought I was crazy because I was growing four plant. It was really pack in there but the leds seem to do the job. One advantage is that it didnt get really hot in there so it was easy to control the temp. Now, I dont know if I should keep using all the LED'S for the drying part or take some light away and, do I keep the same light cycle???

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You want to dry in space that is as dark as possible (light degrades THC). The only time you should ever need to change a light cycle is when switching to 12/12 for flowering

Hey budlover do you have a link or can you remember any more details such as from what distance that reading was taken? * or other stuff like diode wattage or lens angle?

if your going to start using PAR photosynthetically active radiation why not use PUR photosynthetically usable radiation wouldn't you get a better idea of how well the units preforming?

I personaly agree with meharmon we all cant afford the equipment for reading PAR ect so lumens/lux is an acceptable beginning point.

Im no expert but could someone explain to me why we use PAR instead of PUR?

budlover909 said:

the led was first made in the 1900s before the great depression maybe if you botered to look up on wikipedia

you said exactly 'replica'

the definition of replica is 'copy'

a semiconductor chip is far from a copy of a pressurized gas tube

can you even understand your own words bro

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At the risk of getting slammed budlover 909 style i would like to say that the dude was wrong he apologized you don't have to keep going to hammer it in. I have noticed you do this a lot. You seem to not be able to let things go. I do not think it is too contentious to say we all would like it if you quit this. This thread is supposed to promote LED usage not to pick apart every little comment by someone who was wrong.have you ever heard that arguing on the internet is like the special olympics? well trying to read through a thread clogged up by useless jabs is even worse. I respect the fact that you now have a pretty nice gro going, and also that you do contribute to this thread with useful information at times. But please show some respect for the rest of us.
Peace
joe

Grumpy Old Dreamer said:

I didn't know that any of my grows were good enough to be used as an indicator - I'm still perfecting my method, using the cheapest nutes and a single light.
Once I have sufficient grows completed to know the most I can get from cheap ass nutes with a single light, then I will experiment with "better" nutes ... but at the moment my set-up is producing more than I can smoke which is allowing me to collect a nice selection of different buds - variety is the spice of life.

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nice to see you still cruising this thread grumpy, you are one of the few people who uses kessils successfully and are very happy with them. they were getting a lot of bad publicity for failures a while back but since then i havent heard much about them. how long have you been using your kessil?

joe macclennan said:

nice to see you still cruising this thread grumpy, you are one of the few people who uses kessils successfully and are very happy with them. they were getting a lot of bad publicity for failures a while back but since then i havent heard much about them. how long have you been using your kessil?

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I would like to see more kessils in here, I've never actually seen a kessil only grow before. Does anyone have links to grows where only kessil was used in flowering?

jdizzle22 said:

I would like to see more kessils in here, I've never actually seen a kessil only grow before. Does anyone have links to grows where only kessil was used in flowering?

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grumpy old dreamer, https://www.rollitup.org/general-marijuana-growing/397888-ramblings-grumpy-old-dreamer.html#post5131403

joe macclennan said:

nice to see you still cruising this thread grumpy, you are one of the few people who uses kessils successfully and are very happy with them. they were getting a lot of bad publicity for failures a while back but since then i havent heard much about them. how long have you been using your kessil?

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I pretty much gave up on this thread as it was taken over by apparent LED salesmen peddling their version of a tray full of Xmas lights.

Been using Kessils since September 2010 - and I am more than happy with them.
One of my Magenta lights failed - it lost the 15% blue and became a red light. It failed on a Sunday night (in Australia) and the replacement was in my hands in less than 60 hours - no questions asked, best customer service I have ever found.

I need to update my "ramblings" thread as the Magic Bud grow was finished and is half smoked by now - I have a L.S.D. ScrOG a week or two from finishing followed 3 weeks later by a second L.S.D. ScrOG.
Next to be flowered is Tangerine Dream (when the first L.S.D. get chopped) followed by Acapulco Gold which in turn will be followed by Pineapple Chunk ... THEN, finally, I get to grow out some of my home made feminised Red Dragon beans.

The Kessil lights work beautifully for me because I don't need huge amounts and I don't harvest huge grows - my grows are tailor made to match the lights footprint.

Last grow was harvested at the first sign of amber trichomes and I could have left it for another week or two if I was interested in increasing the quantity, but I got more than I can smoke and it was pulled exactly when I determined it would be the best high.

For the record, I only managed 26.7g of maincured bud, weighed when dried to 65% relative humidity. The Magic Bud was very very leafy and the trimmings were smothered in trichomes, I could have left a lot of leaf on the buds but I didn't.

The LSD I have nearing completion should definitely be a lot more weight as it is no where near as leafy and the buds seem more solid. I certainly won't grow it past perfection simply to boost the dried weight, but I am expecting to achieve 1g/watt ... but if I fall short, it doesn't matter - it will still reconfigure my brain cells, and I have a second LSD harvest following 3 - 4 weeks behind the first.

Hey Grumpy,
Have you seen Kessil's latest, the Spectral Halo! I got my Kessil primarily based on what I saw from your grow. I'm using it on veggie seedlings though, lol for now...
If the 350 spectral halo( @ 90watts) is as good as the H150, then it is gonna rock!!

If I had the space for a larger Kessil light, I would definitely get one or two.

joe macclennan said:

At the risk of getting slammed budlover 909 style i would like to say that the dude was wrong he apologized you don't have to keep going to hammer it in. I have noticed you do this a lot. You seem to not be able to let things go. I do not think it is too contentious to say we all would like it if you quit this. This thread is supposed to promote LED usage not to pick apart every little comment by someone who was wrong.have you ever heard that arguing on the internet is like the special olympics? well trying to read through a thread clogged up by useless jabs is even worse. I respect the fact that you now have a pretty nice gro going, and also that you do contribute to this thread with useful information at times. But please show some respect for the rest of us.
Peace
joe

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zero tolerance for bullshit bro you should have known this by now

say ANYTHING bullshit and expect me to call you out on it once im done researching it

this entire world can't advance as long as people try to speak like they know wtf they're saying when they don't know at all. in this entire tread, roughly 10% of thoe posts actually contain correct information
\
the whole threads a failure becase of that signal to noise way to high

budlover909 said:

zero tolerance for bullshit bro you should have known this by now

say ANYTHING bullshit and expect me to call you out on it once im done researching it

this entire world can't advance as long as people try to speak like they know wtf they're saying when they don't know at all. in this entire tread, roughly 10% of thoe posts actually contain correct information
\
the whole threads a failure becase of that signal to noise way to high

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Well thank the Mary Jane gods you are here to be our guiding light while we stumble around in the dark. While I agree that there is a lot of dis-information and not enough research behind a lot of claims, your delivery leaves a lot to be desired.

Agree! Entirely! Completely! Thank you, well said!

I have 3 magenta kessils and 2 purple kessils and they're just not that impressive for the cost. Do they flower?? Sure but not that well. They don't flower well or cover well unless you have a shit ton of them aimed down and in. They are nothing more than side lighting. A kessil only grow would be too expensive for any decent yield or a complete waste of time. If you want mine they are slightly used and I would gladly sell them or trade them for a decent panel if you have one. Don't waste your money. Their spectral halo is just a larger more expensive waste of money on nothing more than side lighting.

Kessil sucks for flowering whether it's the purples or the magentas you would have to have freaking tons of them to do any decent weight. They annoy me to no end. Wish I would have saved my $ to invest on more ISIS or spectra but the last thing I would waste ANY more money on is Kessil. I've been putting it off a side by side ISIS vs KEssil grow long enough. Why?? Because setting up scientific control factors are a bitch and I'm in it for product not knowledge but I don't want anyone else ripped off on Kessil when they're are WAY better options for the $. Need I remind people that for every 2 kessils for a total of 70w they could buy a 120w ISIS and have $ left over. For three kessils you could get either a 240w 357 magnum with 3w chips or a GLH spectra 290. Why in the hell would you want to waste over $700 dollars on kessil when so many more better options exist?? I took the hit in the pocket book because I got all jazzed on KEssil and just really want people know they're just not worth the money. This is despite my warranty issues with 3 out of the 5. Save yourself some time and $ and look elsewhere.

a kessil grow of any decent size would require a trust fund, large settlement or a substantial lottery win. Go ISIS, Go spectra, hell go 120w blackstar for only slightly more but steer clear of Kessils glossy sales pitch. They are insufficient except at a purely hobbyist level.