19 July 2021
’’ Are you buying LED Lights or LED Fairytales?’’
The truths and falsehoods in the LED world Ledgnd's brand independent specialists notice that suppliers…
4 May 2021
Is dynamic controlled LED our future when it comes to additional lights for the horticulture?
Example: Phalaenopsis grower Jan has bought a full-LED installation with 5% blue and 95% red…
22 February 2021
Output (PPFD) goes down after heating up LEDs
After the LEDs are on for 15 minutes, the output (PPFD) drops. This is due…
4 January 2021
Micromol (μmol/s), PPF, PPFD
Micromole μmol/s (micromole) is the unit in which P.A.R. is expressed. This unit indicates how…
4 January 2021
The Daily Light integral
DLI The Daily Light Integral (DLI) is a tool to measure the total amount of…
19 October 2020
P.A.R. (Photosynthetic Active Radiation)
What is P.A.R? Plants and people have a completely different view of light. People mainly…
30 September 2020
Efficiency – μmol/watt
It’s not only about the light output, but rather the ratio of output (light) and…