R40 500 Watt Pool Bulb by CintBllTer – Replacement for R40FL500/HG Incandescent Flood Reflector Inground Pool Light Perfect for Night Swimming - E26 Medium Screw Base - Frosted Glass - 120V - Walmart.com
Wobble Light 500-Watt Double Envelope Tungsten Replacement Halogen Bulb for WL500H Work Light White - Amazon.com
Feit Electric Company Bulb 120V 500W Flood | Leslie's Pool Supplies
400W-500W Equivalent LED Light Bulb, Bright White Bulbs 6500K 65Watt High Lumen, Cool Daylight White E26/E27 Medium Base for Garage Warehouse Factory Workshop Street Backyard Large Area - Amazon.com
Feit Electric 500-Watt Equivalent Corn Cob E26 with E39 Mogul Adapter High Lumen HID Utility LED Light Bulb Daylight (5000K) (1-Bulb) C10000/5K/LEDG3/HDRP - The Home Depot
How many lumens does a 500 W halogen bulb produce? - Lunares blog