Led Users Unite!

jdizzle22 said:
The Blackstar 240w runs on either 133w or 150w (I can't remember) and so its probably only optimal for 2ft x 2ft at best. How big were your growing areas?

Also: How are you following IrishBoys journals and yet you want a blackstar and not a Spectra?
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Reason is price, blackstar is cheaper. 500W blackstar is for example around same price as the spectra 180W.
New grow room is going to be a secret jardin DR90 tent, 90*90*180cm.
 
littleshroomie said:
Reason is price, blackstar is cheaper. 500W blackstar is for example around same price as the spectra 180W.
New grow room is going to be a secret jardin DR90 tent, 90*90*180cm.
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But remember it isn;t 500w, probably about 250w really. Yeah I really think the 2 best options are blackstar and spectra, blackstar for the smaller grows and spectra for those that can afford it. Could I trouble you for a link to that 500w Blackstar? I might be interested in getting one as way to save some money because I could get by with a light half as powerful as my 395w. It could be a better deal...
 
jdizzle22 said:
But remember it isn;t 500w, probably about 250w really. Yeah I really think the 2 best options are blackstar and spectra, blackstar for the smaller grows and spectra for those that can afford it. Could I trouble you for a link to that 500w Blackstar? I might be interested in getting one as way to save some money because I could get by with a light half as powerful as my 395w. It could be a better deal...
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If you google supergravy LED you should find a link to a side by side being run between Blackstar and Spectra. I originally thought he might be sponsored by Spectra but after some of the arguments he's had with the Spectra rep on line I think it's safe so say he's independant so the results will be legit. Gonna be interesting.
 
there are not two forms of phytochrome according to wiki just one "Phytochromes are characterised by a red/far-red photochromicity. Photochromic pigments change their "colour" (spectral absorbance properties) upon light absorption. In the case of phytochrome the ground state is Pr, the r indicating that it absorbs red light particularly strongly. The absorbance maximum is a sharp peak 650–670 nm, so concentrated phytochrome solutions look turquoise-blue to the human eye. But once a red photon has been absorbed, the pigment undergoes a rapid conformational change to form the Pfr state."

aka once it gets hit with red lght it switches to use ir next aint two separate types its what wikisays a 'photoreversible pigment'
 
dunit said:
If you google supergravy LED you should find a link to a side by side being run between Blackstar and Spectra. I originally thought he might be sponsored by Spectra but after some of the arguments he's had with the Spectra rep on line I think it's safe so say he's independant so the results will be legit. Gonna be interesting.
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Nice! Which Blackstar is he running? Someone should email or call Gotham and inquire about their actual draw. Then we'll know all the actual draws of the most popular panels. How can Blackstar consider themselves in the running when they're still selling those crappy super low watt UFOs?
 
jdizzle22 said:
The Blackstar 240w runs on either 133w or 150w (I can't remember) and so its probably only optimal for 2ft x 2ft at best. How big were your growing areas?

Also: How are you following IrishBoys journals and yet you want a blackstar and not a Spectra?
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Because he didnt fall for the sales pitch.............i would take two toyotas over one lexus any day of the week
 
kush you're pretty bandwagon for a dude whos only flowered with the Blackstar for the last 3 weeks of a grow. I only point it out because you ironically commented on someone else falling for a sales pitch. You and gravy are the sole hopes for the Blackstars vs ISIS, Spectra, and Magnum though so keep up the good growing. Ive been following your LED only, bummer about the little setback but better now than 4 weeks in right?
 
ColoradoLove said:
Nice! Which Blackstar is he running? Someone should email or call Gotham and inquire about their actual draw. Then we'll know all the actual draws of the most popular panels. How can Blackstar consider themselves in the running when they're still selling those crappy super low watt UFOs?
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I'd be interested to know what his problem was with GLH because I've never heard of any issues with them before.
 
dunit said:
Except for the rare few lights that are solely Veg lights the rest of the panels are heavy in the reds as they are designed to produce in flower. Some panels have a veg and flower mode but all that does is turn off the blue or red spectrum. Because most of them are heavy on the reds to begin with, when you turn off the red or "flower" spectrum you lose about 70% of the output of the panel.

Short version is if you just buy a regular panel and turn off the flower spectrum you are wasting a good portion of your investment.
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Is this how the Magnums work?
 
jdizzle22 said:
I'd be interested to know what his problem was with GLH because I've never heard of any issues with them before.
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It was customer service issues and I don't think it amounted to much and all I was trying to convey was that the grower is obviously not affiliated with the company.
 
kush groove said:
Because he didnt fall for the sales pitch.............i would take two toyotas over one lexus any day of the week
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I agree when it comes to the cars. Toyota and Lexus have the same internals. Blackstar and Spectra, from the models I've seen, are very different inside. Spectra takes thermal management very seriously, Blackstar doesn't. I'd say it will take about 6 months of continuous use to see how that works out.
 
CoryTrevor said:
Is this how the Magnums work?
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Yes. I haven't found any selectable panels that do it differently. What I would personally like to see is a switch that turns off half the red spectrum which would leave the output less red heavy and thus better for veg but not lose as much output.
 
dunit said:
Yes. I haven't found any selectable panels that do it differently. What I would personally like to see is a switch that turns off half the red spectrum which would leave the output less red heavy and thus better for veg but not lose as much output.
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So am I better off buying a panel dedicated to veg and then another panel dedicated to flowering? I was thinking of going with the Magnum and then having the convenience of just switching from veg to flower, but now I am doubting that route.
 
CoryTrevor said:
So am I better off buying a panel dedicated to veg and then another panel dedicated to flowering? I was thinking of going with the Magnum and then having the convenience of just switching from veg to flower, but now I am doubting that route.
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With how long LED lights are supposed to last and how well even flower models will veg, I think you should just save the money (from buying 1 panel instead of 2) and buy full spectrum/flowering models and skip veg panels.
 
budlover909 said:
there are not two forms of phytochrome according to wiki just one "Phytochromes are characterised by a red/far-red photochromicity. Photochromic pigments change their "colour" (spectral absorbance properties) upon light absorption. In the case of phytochrome the ground state is Pr, the r indicating that it absorbs red light particularly strongly. The absorbance maximum is a sharp peak 650–670 nm, so concentrated phytochrome solutions look turquoise-blue to the human eye. But once a red photon has been absorbed, the pigment undergoes a rapid conformational change to form the Pfr state."

aka once it gets hit with red lght it switches to use ir next aint two separate types its what wikisays a 'photoreversible pigment'
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Apparently there is something in the figure 4 chart you take exception to? The best flowering comes from a bit of Pfr 730+.

http://www.photobiology.info/Shinkle.html
 
jdizzle22 said:
With how long LED lights are supposed to last and how well even flower models will veg, I think you should just save the money (from buying 1 panel instead of 2) and buy full spectrum/flowering models and skip veg panels.
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Agreed. Full spectrum/floweing models really do a kick ass job for veg too. I've never used an all blue veg model, but I can't imagine getting any better veg results than what I'm getting with my full spectrum/flower panel. You can supplement more blues in way of spotlights if you want for veg or reds for flower
 
CoryTrevor said:
One other question.

Do the Blackstar models have the feature where the whole unit doesn't go out with one light dies?
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You don't usually lose the whole unit, but you do lose whatever else is running on that power supply which is usually a good chunk of your panel. I think when Hudson pulled his apart it had two power supplies for the LED's so you'd lose half the panel. I don't know about the current model but the previous model year was not wired to prevent this from happening.
 
I have hydroponics hut lights... pro grow 260

I had the pro grow 550 and a whole row of LEDs went out... and not the whole light

Not sure how each manufacturer wires their LEDs but I would put money almost all are the same/similar and same thing would happen... you would just lose that individual row of LEDs
 
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