How many lumens is 400 watts?
According to our research, the luminous efficiency is about 60 to 110 lm/watt; therefore, a 1000 watt metal halide produces at least 60,000 lumens, or at most 110,000 lumens. Similarly, 400 watt MH produces at least 24,000 and at most 44,000 lumens.
How many lumens is a 400 watt incandescent bulb?
How many lumens is 450 watts?
Energy Star Bulbs
|Watts (energy usage)||Lumens (light output)|
Are LED grow lights as good as HPS?
LEDs are much the same. Though they’re generally more efficient than HPS (with some clocking 2.8 µmol/joule), some LEDs are less efficient than high-quality HPS fixtures, and they give you less light. … All too often, the µmol/joule rating on HPS products states the lamp efficiency, not the actual product efficiency.