... lens deisgn, driver efficiency above 90%. 4. Convenient maintenance, automatic production, 3 years warranty, 5. Best for growing, flowering, fruiting ... lighting effect, 90% light will be absorbed by plant, but to the tradition HPSL and MHL, that light effect is just 8 ... Application: Ideal for all phases of plant growth, and works well with water solution culture and soil culture. Can be used in house ...