New lignt too much??
- Thread starter M48
- Start date
what he said about the natural light pic.
Burned Haze
Really Active Member
Between 200-400 PPFD: for seedlings, clones, and mother plants.
Between 400-600 PPFD: for early to late stage vegging cycles.
Between 600-900 PPFD: for the flowering, fruiting, or budding stage of plants.
Between 200 PPFD and 400 PPFD, plants growth rate potential crawls around 30 – 55% which is recommended for mother plants or young, weaker plants that need a light that’s not super intense.
If you were to double your PPFD from 400 to 800, the growth rate potential reaches about 85%. You would think that doubling the intensity would push the growth rate
potential pass 100% but the truth is, there’s a loss of power in return the more intense your lights become.
Once you surpass 1000 PPFD and go into Double Ended Grow Light territory, your plants stop becoming light limited and start becoming carb limited. At that level of PPFD, increasing CO2 levels is highly recommended to take advantage of that intense light.
For most growers, CO2 is not necessary. So a common balance between performance and efficiency is in the 600-900 PPFD range.
Keep in mind that this is assuming that you have an ideal spectrum and only represents the potential growth rate on the lighting side and doesn’t factor in other environmental conditions or genetics for optimal growth.
it really boils down to DLI par and ppfd are factors that get the plant the DLI it needs to prosper
Info:
gpnmag.com
Between 400-600 PPFD: for early to late stage vegging cycles.
Between 600-900 PPFD: for the flowering, fruiting, or budding stage of plants.
Between 200 PPFD and 400 PPFD, plants growth rate potential crawls around 30 – 55% which is recommended for mother plants or young, weaker plants that need a light that’s not super intense.
If you were to double your PPFD from 400 to 800, the growth rate potential reaches about 85%. You would think that doubling the intensity would push the growth rate
potential pass 100% but the truth is, there’s a loss of power in return the more intense your lights become.
Once you surpass 1000 PPFD and go into Double Ended Grow Light territory, your plants stop becoming light limited and start becoming carb limited. At that level of PPFD, increasing CO2 levels is highly recommended to take advantage of that intense light.
For most growers, CO2 is not necessary. So a common balance between performance and efficiency is in the 600-900 PPFD range.
Keep in mind that this is assuming that you have an ideal spectrum and only represents the potential growth rate on the lighting side and doesn’t factor in other environmental conditions or genetics for optimal growth.
it really boils down to DLI par and ppfd are factors that get the plant the DLI it needs to prosper
Info:
Do You Know What Your DLI Is? - Greenhouse Product News
In last month’s column, I discussed the definition of daily light integral (DLI). Just to refresh your memory, DLI is the cumulative amount of photosynthetic light that is received each day. The DLI is measured as the number of moles of light (mol) per square meter (m-2) per day (d-1), or...
gpnmag.com
sfrigon1
Seed Aficionado
All good just back the light off a touch and see how they respond. Looking good though
sfrigon1
Seed Aficionado
Looking good man
