iPower 315W CMH Grow Light Bulb, High Efficiency Low Heat Ceramic Metal Halide Lamp, for Plants Growth and Flowering, 4000K
- High lumen output: Initial lumens: 33,000lm, 110 lm/w, 540 μmol/s.
- Long-lasting light: High lumen maintenance 90% at 8,000 hours.
- Full spectrum: Richest spectrum growing bulb with a CRI (color rendering index) of 98, makes this bulb the closest solution to the sunlight, promotes extremely tight internal spacing, leading to more flowering sites and a fuller canopy.
- New technology of stems growing: A proprietary phosphorous coating on the outside of the arc tube provides the richest spectrum and produces more PAR (photosynthetic active radiation) per watt than standard HPS/MH bulb.
- Low heat generated & enhanced lifespan: 15,000 hours’ lifespan. Great for indoor horticultural or supplemental greenhouse lighting.