11 articles in this section
Far-red light (730 nm): why it is added to grow lights and the required amount. The Emerson effect, ePAR, and a safe do…
Supplemental seedling light in winter? Interactive widget and light calculator: PPFD and daily dose (DLI) from the sun …
A lux meter costs pennies; a quantum meter costs hundreds. Our PPFD calculator turns any lux meter reading into PPFD us…
The true meaning of a full spectrum grow light and quantum board. McCree curve, PAR, and R:FR. This article features an…
Why a single thermometer in a grow tent lies? We break down temperature gradients, VPD, the leaf boundary layer, and pr…
A photosynthesis simulator based on the FvCB and Medlyn models. CO₂, PPFD, temperature, humidity, and VPD effects are a…
What is VPD? Use our interactive VPD calculator and VPD chart to easily find the optimal vapor pressure deficit for you…
Lumens or PPFD: which is better for plants? Discover why bright light isn't always useful and explore our interactive s…
Learn about LED efficiency, an important parameter of PPE. What does the efficiency of LEDs indicate, how much energy i…
What DLI is, how to convert PPFD to daily light integral, and a DLI chart by crop — with a calculator that shows the d…
PPF and PPFD are among the most important characteristics of phytolamps, but they are often confused. What do these par…
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