The quality of a grow light can be understood by looking at the spectrum of that light source. Natural sunlight is intense and has a broad, balanced spectrum. Indoor plants require the same high intensity and broad yet balanced spectrum.

Evaluating the Quality of a Grow Light Using Spectrum

What is a Spectral Distribution Chart and How to Read It

What is Spectrum Degradation?

What is UV and What Does It Do for Plants?

Effects of Dimming on Spectrum

Sections of a Spectrum and What They Do for Plants

What is Far-Red and What Does It Do for Plants?