Aqua Glo Fluorescent Bulb T8, 15w, 18in - Walmart.com
HAGEN GLO T8 AQUARIUM LIGHTING STARTER UNIT BALLAST | eBay
Feit Electric 4 ft. 15-W G13 Type AB T8 Plug and Play Or T8/T12 Ballast Bypass Linear LED Tube Light Bulb, Daylight 5000K (10-Pack) T4815/850/AB/LED/10 - The Home Depot