Simply Conserve G24Q/GX24Q Horizontal PL 18-Watt EQ Single tube Cool White LED Light Bulb (20-Pack) in the General Purpose LED Light Bulbs department at Lowes.com
Philips LED 532969 PAR38 Plant Grow Light Bulb: 1200-Lumen, 5000-Kelvin, 16- Watt, E26 Medium Screw Base, 1-Pack, 1 Count (Pack of 1), White - - Amazon.com
PHILIPS LED Bulb: Cylindrical, Medium Screw (E26), 50W MH/50W HPS, 18 W Watts, 4000K, LED - 60EE86|929002395404 - Grainger
Philips CorePro LEDbulb D 9-60W E27 2700K 806lm LED Lamp