Phytolight Theory

LED Efficacy (PPE): Where Does 1 Joule of Electricity Go?

Find out what PPE (photosynthetic efficacy) is and why µmol/J is an important parameter of a grow light. Where electric…

DLI in Horticulture: The Key Metric for Lighting Calculation

Find out what DLI (Daily Light Integral) is and why it's more important than PPFD for plant growth. A simple "rain and …

What do PPF and PPFD mean? Why PPFD is more important

PPF and PPFD are among the most important grow light specifications, yet they are often confused. Learn what these metr…