Why is PAR Rating a Big Deal for Indoor Grow Light Systems. PAR is one of the biggest factors in whether your grow lights will provide you with the best yield for your garden. PAR is a part of our benchmark measures when testing grow light systems. It can be used to test all types of HID grow...
growace.com
"Keep in mind that these measurements do not factor in reflective walls that will increase your PAR ratings by 20-35%"
I call BS
They put up like 20 diff charts,,, none show this unsupported claim manifest.
According to their own mesurements, light intensity fell 40% by moving the bulb from 24" to 18 inches. ( 1377 : 824 )
How is oblique light going to travel the first two feet, bounce off the wall, travel an additional 2 feet, and magically hit the target with 30% increased intensity ?
Just not buying it.
Law of inverse square dictates that light will arrive with 25% of original intensity if the distance is doubled.
Dunno,,,,I make stuff up.
Light drives photosynthesis.
If a hang a 100 dollar roll of name brand foil, will all my two ounce plants become three ouncers?
Not trying to be contrary. I just dont see that money ever coming back.