MeGaKiLlErMaN
Well-Known Member
Not sure where people are finding this PPFD above 2000... but this is the summer sun
Maxx PPFD ?
- Thread starter Budget Buds
- Start date
bxkid
Well-Known Member
Would you happen to have a journal on that grow to follow?...that would be cool.
Olive Drab Green
Well-Known Member
I do. It's my blog.
bxkid
Well-Known Member
Perfect...thanks
CobKits
Well-Known Member
my licor reads 1800-2000 in full summer sunNot sure where people are finding this PPFD above 2000... but this is the summer sun
MeGaKiLlErMaN
Well-Known Member
Which would match this chart... but its not some 2500.
ttystikk
Well-Known Member
Actually, you could do FOUR, one on each wall.
Budget Buds
Well-Known Member
That is beautiful , I have a pineapple bush too, There fucking awesome
ttystikk
Well-Known Member
In Colorado we do, every summer.
Olive Drab Green
Well-Known Member
Thanks, bro. And that's cool.That is beautiful , I have a pineapple bush too, There fucking awesome
BobCajun
Well-Known Member
I just got it from the pdf I linked. I don't know how accurate it is. So let's just say around 2000 then. Maybe they were on a mountain, who knows. Here's a graph from a pdf that I had saved. Don't have a link but the title is "Light dependence of photosynthesis and water vapor exchange characteristics in different high 9-THC yielding varieties of Cannabis sativa L."Not sure where people are finding this PPFD above 2000... but this is the summer sun
Last edited:
Not sure where people are finding this PPFD above 2000... but this is the summer sun
I shared this site one time before, but it's really interesting. It's what Apogee suggests you use to calibrate your PAR meter (they created the site), so I presume it's very accurate (with the caveats about weather). They even show the effect of different factors like RH.
With all that said, yes, it's very possible to get PAR above 2000 for the middle of the summer (although ~2200 is about the highest I'm finding just playing around with it).
http://clearskycalculator.com/quantumsensor.htm
Budget Buds
Well-Known Member
Alright people , another question, I ran this by @CobKits And he told me I needed the ler number which me being led illiterate , I dont know where or how to find it. I'm trying to find the efficiency of my lights. Here is the info I have on it. Vero 29 7th gen data sheethttp://www.bridgelux.com/sites/default/files/resource_media/DS93%20Vero%2029%20Array%20Data%20Sheet%20Rev%20A%2020160622.pdf Here is the info for the hlg 240 1050 driverhttp://www.bridgelux.com/sites/default/files/resource_media/DS93%20Vero%2029%20Array%20Data%20Sheet%20Rev%20A%2020160622.pdf
The vero's are 52v 3000k . Can you guys help a brotha out with this ?
The vero's are 52v 3000k . Can you guys help a brotha out with this ?
abaloneandbuds
Active Member
What latitude? day of the year? weather? Was the moon out? Humidity? Elevation?Not sure where people are finding this PPFD above 2000... but this is the summer sun
I could go on, but hopefully my point is made.
MeGaKiLlErMaN
Well-Known Member
I have something simaler in my signatureI just got it from the pdf I linked. I don't know how accurate it is. So let's just say around 2000 then. Maybe they were on a mountain, who knows. Here's a graph from a pdf that I had saved. Don't have a link but the title is "Light dependence of photosynthesis and water vapor exchange characteristics in different high 9-THC yielding varieties of Cannabis sativa L."
MeGaKiLlErMaN
Well-Known Member
Hey like I said I'll take my own measurement when it's summer again lol. Still getting 850ppfd in Michigan now.
