Anthem
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Take a look at the Viparspectra website. The graph is incomplete, there is always an x/y chart showing things. The listed chart only has information along the bottom and a 100 percent at the top of the blue spectrum which means nothing. You have to really look hard at the data and you will find holes.There's just as much if not more blue in the sf and ts lights.
That's day 29. You can check out the latest page in the link in my signature... I'll post an update in the next few hours with a bic lighter next to it.What day of 12/12 light is that plant in and can you put something next to the bud to get a size understanding?
+1Anyone ever test these dime-a-dozen lights vs buying Samsung diodes from a reputable place?
I have a sneaking suspicion you're likely not getting what's advertised.
If that small pocket of southeast China is good at doing one thing, it's fooling the rest of the world with top notch product label replication.
+1
Some guy I know used to manufacture anabolics and order hologram bearing "pharmaceutical" labels from Chinese printers on alibaba
imo penetration comes from mostly red and believe it or not green. LED penetration is actually quite good. We need to look at it as not the photosynthesis of the the top leaves exposed directly to light but the whole plant and blurple lacks green for penetration. I think this is where we got into the LED doesn't provide good penetration idea and test results. Green albeit more inefficient than red and blue still can account for a good amount of photosynthesis because of its ability to penetrate through leaves and into the lower canopy. Once thought that plants reflect all green light and don't use it as seen by many that use it in the dark to see them. I had that convo with @MIMedGrower oh probably more than a year ago and I figured at that time that the intensity is the key to whether it could affect flowering as some reported it did. Everything I have found since then supports that and green as long as its below a certain ratio is important.So, back to the point I was getting at, is that a balanced spectrum with relatively equal blue and red spikes is where the current high performance LEDs are at (and, yes, far red supplementation).
Like aqua said, blue will make them short but so too will red, come flowering... when we want to minimize stretch and also get that nicely packed bud structure.
The big issue with LEDs (except COBs) is intensity and penetration, so, generally, the shorter the plant, the better.
So would all that blue account for the stretching during flower from the lack of the red?So, back to the point I was getting at, is that a balanced spectrum with relatively equal blue and red spikes is where the current high performance LEDs are at (and, yes, far red supplementation).
Like aqua said, blue will make them short but so too will red, come flowering... when we want to minimize stretch and also get that nicely packed bud structure.
The big issue with LEDs (except COBs) is intensity and penetration, so, generally, the shorter the plant, the better.
So, back to the point I was getting at, is that a balanced spectrum with relatively equal blue and red spikes is whereDid you look at HLG?It's really hard to choose a good light because I have such a small tent, the actually good ones are much too bright and are made for much bigger spaces. But the cheap ones have a bad spectrum and aren't as efficient but somehow much more expensive for what you're getting.
that light is right at 25 watts per square foot and will do very well in a 2' x 2' foot print.HLG 100 V2
HLG 100 V2 is ideal for a vegging or flowering in compact spaces. Equivalent to 220W T5 or 300W CFL output or 250W metal halide. Samsung LM301H LEDhorticulturelightinggroup.com
It's really hard to choose a good light because I have such a small tent, the actually good ones are much too bright and are made for much bigger spaces. But the cheap ones have a bad spectrum and aren't as efficient but somehow much more expensive for what you're getting.
Choose a light with the best spread that can get ya to 1000ppfd so you have adequate light for flower. Tons of factors influence this and if we are gonna go all out bumber crunching then yeah there is a lot of money to spend on a little difference.It's really hard to choose a good light because I have such a small tent, the actually good ones are much too bright and are made for much bigger spaces. But the cheap ones have a bad spectrum and aren't as efficient but somehow much more expensive for what you're getting.
Ratio of blue to red. Blue will keep em squat. Red will increase internode... then take into account temperature difference between day and night, add to that hormones like pgrs....So would all that blue account for the stretching during flower from the lack of the red?
Bingo.Choose a light with the best spread that can get ya to 1000ppfd so you have adequate light for flower. Tons of factors influence this and if we are gonna go all out bumber crunching then yeah there is a lot of money to spend on a little difference.
There are gimmicks etc. But if you know why they are and can compensate and just use basic math with the actual true numbers even the cheap Chinese ones will produce killer. Generally speaking if you get good even coverage with a 3-4k spectrum and good intensity you are there.
Thats aside from quality issues, failures, lower efficiency etc. Look how much less efficient HPS is and still grows killed bud.
If you look at the ppfd map of that light it's terrible and it's likely exagerated.
Oh I didn't see that, thanks.no they arent. Hlg has a 135 watt board kit complete in stock for $197.
Where are you seeing the PPFD chart in the information sent?If you look at the ppfd map of that light it's terrible and it's likely exagerated.
I see it now was looking at the MiMed offering. And yes they pay for outside testing. So take a look at the chart and the rest of the data and you might find some ways of looking at the data from import lights to get an idea of just how full of shit the imports are.Where are you seeing the PPFD chart in the information sent?
If you are talking about hlg ppfd maps they pay for outside testing. Its accurate. Most everyone elses is not.
Mb, I just saw the map.Where are you seeing the PPFD chart in the information sent?
Now that I have some people here who know about lights, would this spectrum be sufficient for flower?
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