There is also an app for Android called PPFD. It’s not as accurate as photone and I may or may not have recommended a version of its best feature go into the new photone Android version. Neat little tracking thing the PPFD app does. If you don’t have a smart phone or other way to test lest light intensity you just have to do it the old fashioned way. Listen to the girls. They’ll stretch out nodes if not enough light, the canopy leaves will curl if too much. I’m sure your product manual has recommended hanging heights/power. They almost all do. Which is a good starting point.
First three weeks:
The marijuana crop’s first stage is also its most important. Cultivators should ensure their first-stage canna plants get DLI from 13 – 19 units each day. That’s at a rate of 200 – 300 PPFD for eighteen hours.
At this range, there’s a chance of better yields when your plant crosses to the vegetation stage.
Vegetative stage:
At the veg phase, your plant has to receive upwards of 20 moles of light each day. But the DLI isn’t expected to exceed 35 units at this period. Because this is a make-or-break stage, growers are mostly at odds on numerous fronts.
During the veg phase, canna plants usually require more energy to boost growth potential. Some growers could flat-out disregard recommendations and double the required DLI for increased vegetation.
Several elements, like hours of light, light intensity, and grow light spread could impact growth at this stage.
Flowering stage:
Optimal flowering may require around 38 – 65 DLI units each day. If your marijuana flowers as it should, you can expect a good harvest
These hijacked numbers are obviously for autos. But not really that different.