quantum meter

I just bought a Apogee MQ-500 quantum par meter! Anyone know of any videos on how to best use this device when I get it in the mail? I was trying to find videos on how to use it for LED light height, and other uses it has for growing. Strangely, I can't find any really videos on it. All the...

Hey guys, I am considering getting a quantum par meter. Does anyone have a good chart or table that shows the par reading recommendations for each stage of growth? I can't seem to find any good ones. Thanks!

ive decided the next toy i wanna get to continue tuning/building grow lights is an apogee quantum meter/sensor and have begun shopping. I have a few questions i need answered. i tried searching but couldnt find the info i needed. first of all, ive been looking at these...

Hey, Y'all. If this has already been covered please just let me know, but I have been searching and haven't found any threads that really cover this. I want to get some suggestions for a good quantum meter. I have come to realize that measuring PPFD is going to be vital to tuning in my grow and...