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.
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.
+1
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 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 whereDid you look at HLG?
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.horticulturelightinggroup.com
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.
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....
Bingo.
Oh I didn't see that, thanks.
Where are you seeing the PPFD chart in the information sent?
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.
Mb, I just saw the map.
Now that I have some people here who know about lights, would this spectrum be sufficient for flower?
