Philips 20-Watt T12 Plant and Aquarium Linear Fluorescent light bulb (F20T12/PLANT & AQUARIUM) is ideal for use in freshwater aquariums or for growing indoor plants. It provides 600 lumens of light and lasts for at least 9000 hours. Philips Plant and Aquarium light bulb helps cast the right light spectrum that is needed for growing plants indoors and keeping fish happy.