Shrubs First
Well-Known Member
Lumens are a photometric measurement for the human eye and have nothingI'm not gonna speak for everyone, and I certainly don't know what 80% of the growers use.
Honestly I think most of people on here that grow don't know dick on growing and listen to whatever their plant shop tells them to buy.
Lumens have a shit load more to do with yield than spectrum.
JFYI, I use HPS for bloom.
at all to do with plant growth.
Radiometric terms are what matter, they are measured in Watts per Meter Square.
Lumens is a number determining the number of photons in a givin area where
the spectrum of the photon is weighted according to how sensitive the human
eye is to it... The most sensitive colors to the human eye happen to be the most
ineffective colors to the plant detection, meaning a high lumen rated bulb is in
the complete WRONG spectrum for plant growth, not saying it wont work
cuz look at all these retards growing with HPS....