Lighting How Much Light is Optimal, How Much is Too Much, In late Veg. Phase

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A photon is a photon, regardless of the source it originates from...... Read through the links referred to in post [HASHTAG]#5[/HASHTAG]. An understanding of terms such as PPFD, DLI and the Calvin cycle amongst others, when discussing "amounts" of light is helpful....

Here's some HubbaBubbaSmelloScope grown under 2 MarsHydro 600 w reflectors with 3 w diodes 24/7, and I have plenty more pics from running out of height with other plus 1,5 m strains when I took on more than I could handle..... (I blame it on the Autopots, but that's another story....)...... I deliberately kept the bleached parts to see the efficiency of the photon torpedoes..... LolView attachment 634601

Where the footprint of the 2 lights overlap is the prime kill zone....
https://fluence.science/science/par-ppf-ppfd-dli/

cool man, thanks for the link. I'm in the process of switching my aquarium to led. Same arguments over there, but much simpler since everything is measured in algae. ok, I stand corrected based on your picture. 2 Mars 600 is probably too much for one plant. And I've seen a picture to prove it.

 

[Corgy]

No worries..... Actually there was 6 plants under those 2 lights, ended up with some 640 g useable fruitage.

Aye, I've got 3 aquariums with led lights, not marine though so no need for any fancy photon footwork there....

 

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after reading the link more thoroughly I googled cannabis dli and found a post on reddit. It contradicts the notion that cannabis can have too much light due to the fact that it is a flowering plant. DLI is Daily Light Integral, which once the dli is known for a plant you can optimize the amount of light it can handle .The post states dli over 30 would start having negative affects on weed.
https://www.reddit.com/r/microgrowery/comments/2862ot/daily_light_integral_for_cannabis_at_various/