Select fluorescent lights that are the best for plant growing. The website Gardeners.com recommends a combination of cool white bulbs and warm white bulbs, each offering certain spectrum colors that can benefit plant growth. Cool white bulbs give off more blues, yellows and greens, while warm white bulbs produce more orange and white light. This balance is achieved by using a two-bulb work shop tube fixture and installing one cool white bulb and one warm white bulb.
GE makes bulbs known as "GE Plant and Aquarium tubes" specifically for indoor growing. SunLite also makes bulbs designed for plant growing application. Purchase at hardware and lighting stores.