Your Smartphone is a Quantum Par Meter | “Photone” App
5:00
PAR meter apps for smart phones | IOS and Android PAR meter apps compared
12:17
LUX vs PAR Meter | Can You Use a Lux Meter with Grow Lights?
1:55:27
Worst Fails of the Year | Try Not to Laugh 💩
16:48
PAR, PPF, PPFD, and PFD Explained
21:31
Spider Farmer, Maxsisun, Mars Hydro - Entry Level LED Grow Light Comparisons, Test Reports & Reviews
20:40
Why Are Streetlights Turning Purple? In Depth Analysis and Fix
12:15
Best Grow Room Conditions to maximise growth and yield | Light (PAR), Temperature, Humidity and Air
13:28