TODAY'S A NICE DAY TO TALK ABOUT SPREADING THE LIGHT ABOUT UPDATE
Good afternoon folks, what a day to grow! As i watch my little ones come to life I see they won't stay small long and I'm going to need good strong light for them soon. Here's the light footprint chart
@ViparSpectra has for us.
Love those numbers! I'm just realizing PAR is PPFD
Here's a study that looks close to what I've been working with:
PPFD Measurements and What's Best for Your Plants
As we've mentioned,
PAR is the type of energy plants use from light and
PPF is a way to measure light efficiency or intensity.
PPFD, or
Photosynthetic Photon Flux Density, is a measurement of light density in a given area.
So let’s talk benchmarks and the best PPFD/PAR range for your plants! Between 200-400 PPFD: This is great for seedlings, clones, and mother plants.
Between 400-600 PPFD: This is great for early to late stage vegging cycles.
Between 600-900 PPFD: This is great 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. But 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 these benchmarks we mentioned represents the potential growth rate on the lighting side and doesn’t factor in other environmental conditions or genetics for optimal growth.
Within those parameters I get a healthy plant. Valerie, is the KS5000 chart above taken at 12 inches height?