Hi there, 3.14 µmol/J is a very good efficacy rating for an LED grow light. Most high-quality LED grow lights on the market have efficacies ranging from 2.0 to 3.5 µmol/J. An efficacy above 3.0 µmol/J is considered excellent and indicates that the light is highly efficient.
The FC-4000 Evo offers a full spectrum of light, which typically includes a balance of blue, red, and white light. This is beneficial for all stages of plant growth, from seedling to flowering.
Considering the specifications and efficiency rating of the FC-4000 Evo, it appears to be a worthwhile investment for serious indoor growers.