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Increase PPFD from Seedling to Veg?
MMSC16started grow question 10 months ago
Hi all!
Is now the time to lower lights/increase PPFD?
First set of 3-fingered leaves are developing. Plant is only 9 days old.
Really don't want to stunt autoflower, but want to get the most out of photosynthesis as early as possible.
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gottagrowsometimeanswered grow question 10 months ago
25k lux max up to 40k lux max on late veg. But start of with the 25 after 10-14 days.
Your plant has another few days to go before needing more lux. 12-15k is all that's needed for seedlings
250-350ppf
To 5-600 max fr veg & pre flower not beyond 1000 during fattening and 6-700 during ripening
But as also said below DLI plays much more a role in autos
Between 45-60k DLI throughout their lives increases in dli with same hrs builds big buds. So what's important for autos is to boost energy by extra ppf over the same amount of hrs from start 2 finish. How autos work..
Fems u need 12 but can do 13.5hrs on with 730nm IR used to change the photochrome.
Good luck they look healthy and not leggy so I think maybe ur light is too high.. or perfect. Anyways looking goo
Grey_Wolfanswered grow question 10 months ago
just keep things simple for now mate its still young consider lowering the lights but not too much or the plant will remain short
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TheGreenGroomeranswered grow question 10 months ago
if you can measure the light ppfd sit them around 100-200ppfd for another week, then slowly adjust it overtime throughout the growth cycle, you can find ppfd charts online for cannabis plants give them a look, if you do not have anything to test the ppfd download the photone app it works pretty damn good but you will need some sort of diffuser, you can either buy theirs ''photones'' or make your own by folding a regular matte white piece of paper (22 lb or 80 g/m2) around your front and back camera, tape it lose so you can re use it ;)
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m0useanswered grow question 10 months ago
Look up DLI and get some PPFD maps from your lights manufacture for your tent size.
Cannabis can take aorund 35-40 DLI max at best, I run mine close to 35 then 40.
You can also judge is the light is to close or not by the space in between the inter nodes.
Good Luck.
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