Hdinkleman
Well-Known Member
the ppfd should be translated to DLI which it isnt.
different hours of lights in will provide different DLI so that chart is pretty vague.
for reference though, any DLI over 40 requires co2 supplementation, or approximately 40. personally i wouldnt go over 40 without it.
if you dont have a light meter those numbers are egyptian without the rosetta stone though, just sayin.
this link
will give you a better idea of how to actually put those numbers to use.
i have tested it myself with an actual light meter and its pretty accurate within 50 ppfd
different hours of lights in will provide different DLI so that chart is pretty vague.
for reference though, any DLI over 40 requires co2 supplementation, or approximately 40. personally i wouldnt go over 40 without it.
if you dont have a light meter those numbers are egyptian without the rosetta stone though, just sayin.
this link
will give you a better idea of how to actually put those numbers to use.
i have tested it myself with an actual light meter and its pretty accurate within 50 ppfd