Could always rent one, only cost me 35 dollarsI don't own a par meter and I'm not going to buy one.
As I previously stated, "I have a Radion Gen 3 XR30pro running AB+ at 55% intensity." This light fixture has been thoroughly tested. If you really care what my par numbers are, you can figure it out. The clam was mounted 10" down from the surface.
I can tell you that the par is adequate, because i have had to turn this fixture down until it quit burning my SPS.
There's so many people that are "experts" that can't grow anything larger than a frag. Consistency within acceptable parameters is more important than exact numbers.
This is an older picture, but you get the idea.