How many Lumens for a 400watt Metal Halide and what is the LED equivalent
Can I Use a 100W Equal LED Bulb in a 60W Socket? — 1000Bulbs.com Blog
Go Green with this Light Bulb Conversion Guide - Overstock.com
40 Watt Incandescent Equivalent LED Light Bulbs 5 W Lighting Fixture Soft Warm White A55 450 Lumens E26 Medium Base Bright for Home or Decorative, Pack of 5 - - Amazon.com
Orein 175-Watt Equivalent ED28 HID LED Light Bulb in Daylight A828B175ND2604 - The Home Depot