Philips 21-Watt 34 in. Linear T5 Fluorescent Tube Light Bulb Bright White (3000K) 220962 - The Home Depot
T5 Fixture for High Output | Shop 4 Bulb Light Fixtures for 4 Foot Bulbs | HTG Supply
T5 Fluorescent Commercial Light System with Bulbs | The Aquaponic Source
Simply Conserve T5 linear 54-Watt EQ 46-in Daylight Miniature Bi-pin (t5) Linear Type A LED Tube Light Bulb (25-Pack) in the LED Tube Light Bulbs department at Lowes.com