Features:LED chips: 100pcs 3W LED, high power Par Value ensured, Energy saving, environmental friendly. It will provide uniform light to plants, and won't cause any light spot.Recommend hanging height and lighting time: Germination stage: 24-30 inch. Vegetative stage: 18-24 inch, 16-20 hrs. Flowering stage: 12-18 inch, 12-14 hrs.(Different plants have different solutions)Full Spectrum design from 400-740nm, you can easily grow your plants in any growth cycle required like germination, seedling, veg, flower. With true 3 watt high intensity chip, stronger penetration, higher lumen and good for increasing yields.Effectively replaces a conventional 450W HPS grow light, giving your plants 100% usable light that is perfectly tuned to create maximum photosynthetic response.Protecting diodes are added to make sure one chip out, others still work.Can be used in any indoor growing method: hydroponics, aeroponics or soil growing.2 excellent cooling fans keep LEDs at optimal temperatures to ensure long lifespan.