T8 is one of the most popular bulb types for growing plants. A t8 bulb is an artificial light bulb designed for growing plants. Most of the bulbs are used in hydroponics, or with a nutrient solution. Hydroponic systems have been around for a long time and are the most common way to grow plants indoors. A t8 bulb is similar to a T5 bulb but with one big difference:
it has a much higher wattage than a regular T5 bulb. The higher wattage means that the plant will require less energy, which in turn means that you will be saving money on your electricity bill.