Grow lights are specifically designed to create light in colors that plants can absorb (red, yellow, blue, purple, UV, essentially everything but green). Standard lights and lightbulbs are made to create light that is useful for the human eye, specifically. To put it simply, they’re made to help us see, not to help plants grow. Some plants will thrive under fluorescent lighting when supplementing a low-light setting, but not all. The artificial light being offered needs to be a high enough intensity to meet your plant’s needs. Grow lights are designed to offer what plants are missing in their environments because outdoor light is constantly bouncing back onto them in ways that indoor light simply doesn’t. Typically grow lights don’t create much heat.