Amazon.com : Ultra Sun 901589 T5 54-watt 6500K HO Lamp, 4-Feet, Blue : Plant Growing Light Bulbs : Tools & Home Improvement
VIVOSUN T5 Grow Light Bulbs 54W 6500K HO Fluorescent Tubes Light Bulbs, Cool White T5 Bulb for 46 Inches T5 Light Fixtures, T5 Grow Lights for Indoor Plants, Pack of 5
F54T5 54W 46 Inch T5 Fluorescent Light Bulb | 6500K Full Spectrum Medium Bi-Pin Base | 4950 Lumens 85 CRI 36000 Life Hours | Instant/Programmed Start | 40 Pack by GoodBulb - Walmart.com
8 Pack - 54 Watt T5 Fluorescent High Output Grow Lamp T5ho Tubes Bloom 6500k for sale online | eBay
GE Starcoat T5 HO 54 Watt 4 ft 6500K - GrowGiant.com
Sunlite Fluorescent Tube Lights 54-Watt 46-in Miniature Bi-pin (t5) 6500 K Daylight Fluorescent Light Bulb (40-Pack) in the Fluorescent Light Bulbs department at Lowes.com