Often thought of as the traditional “shop light”, fluorescent lights come in a wide range of spectrum colors. Depending on the growth stage of your crop, you might choose to use anything between cool and warm spectrum bulbs. Due to the fact that they produce little to no heat, fluorescent bulbs are perfect for compact spaces where your crops are forced to be in close contact with your lighting system. From simple fluorescent bulbs and compact lights to the further advanced T5 fluorescent lighting systems, these lights use less energy than other traditional grow lights, with the ever-popular T5 bulbs being the most efficient bulbs of its kind.