Careful, you CAN give plants too much light

Wattzzup

Wattzzup

Well-Known Member
rootforme said:
That plant had a 3.9 ph for 2 days it has nothing to do with light which is what this discussion is about but by all means keep deflecting and proving you're not interested in honest discussion.
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How did you measure this? I thought your meter was fucked up?
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
rootforme said:
Why are you guys on my d so bad? lol

Next you're gonna ask me for a selfie
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Let's start with you parroting info from a YouTube video.

rootforme said:
Scientific studies at various universities on cannabis have shown the greatest yield and potency occurs at about 1500µmol (the sweet spot) but cannabis also continues to increase yield and quality all the way up to 2000µmol and higher but after 1500µmol you experience diminishing returns.
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You said various universities have done scientific studies about light intensity. Would you care to back up your claims and provide links? Or are we just taking your word?
 
rootforme

rootforme

Well-Known Member
twentyeight.threefive said:
Let's start with you parroting info from a YouTube video.



You said various universities have done scientific studies about light intensity. Would you care to back up your claims and provide links? Or are we just taking your word?
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I didn't get that from a YouTube video I got it from a website.. Furthermore, it's in quotes, and if you understand how the English language works quotations means it's someone else's words being used, so parotting is expected when something is in quotations I know that might take a lot of brain cells to understand if you don't know the English language.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
rootforme said:
I didn't get that from a YouTube video I got it from a website.. Furthermore, it's in quotes, and if you understand how the English language works quotations means it's someone else's words being used, so parotting is expected when something is in quotations I know that might take a lot of brain cells to understand if you don't know the English language.
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Ok fantastic. Would you care to link the multiple university studies on light intensity now?
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
rootforme said:
Yeah rookie mistake had 2 different ph meters reset to calibration and I was dumb enough to keep reading 7 and keep adding ph down not even coming to the conclusion that my ph meter was in calibrate mode
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Ok rookie mistake, lmao. And 3 years ago you were pulling 3 lbs per plant. Did you regress from master grower to rookie?
 
Samwell Seed Well

Samwell Seed Well

Well-Known Member
rootforme said:
Scientific studies at various universities on cannabis have shown the greatest yield and potency occurs at about 1500µmol (the sweet spot) but cannabis also continues to increase yield and quality all the way up to 2000µmol and higher but after 1500µmol you experience diminishing returns.
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Do you mean the studies cited here


"In the case of cannabis plants, most studies have been conducted under light intensities ranging from 300 to 2000 μmol m−2 s−1; this is higher than what is typically used for greenhouse crops and all spectral quality studies (McCree, 1972a; Inada, 1976; Chandra et al., 2008; Chandra et al., 2015). In this scenario, the spectral quality of photosynthesis for cannabis plants is required to optimize growth."

And agian mentioned here

" (Chandra et al., 2008; Chandra et al., 2015). In these studies, no decline in photosynthesis rate was observed at the highest intensity used; however, net photosynthetic rates at 30°C decreased by ~20% from 1,500 to 2,000 μmol m−2 s−1 (Chandra et al., 2008; Chandra et al., 2015)."


Man people trying hard to appear ignant

What does no decline in photosynthesis mean... is photosynthesis good
 
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