Quote Originally Posted by khyberkitsune
PROTIP: ALMOST NO LED MANUFACTURER CAN PROVIDE YOU THAT PHOTON FLUX DENSITY MEASUREMENT. Most of them aren't even aware that a proper measurement for photosynthetic photon flux density even exists.
It sounds like I need to get a "Quantum Sensor" or "Quantum Meter". I see they measure Photon Flux in the photosynthetic spectrum.

Does anybody use on of these currently? Are there any recommendations on brand etc... I found them starting at $140 on this site: Apogee Instruments Quantum Sensor - Measuring PPF
omnibuddy Reviewed by omnibuddy on . Omnibuddy Custom LED Grow Hi everybody! I greatly appreciate your stopping by to enjoy my grow log! Everything in this log is fictional and meant just for fun! All photos are from the internet! I just like roll playing and such. Oh the fun we will all have together! Lights: Flower (3) Tri-Band Custom Built 120w Flowering LEDs (6) UVB Reptile Lights Veg Rating: 5