High-Quality Plant Light Bulb: With a high output PPF of 34 micromoles per second, these indoor lights for plants provide more nourishment to optimize plant growth and health; Perfect for indoor herb gardens, tomatoes, cucumbers, peppers, flowers, fruit trees and pollinators in their fruiting or flowering growth stage Advanced LED Light Bulb: GE indoor grow lights for plants feature energy-efficient LED technology and high output PPF with a suitable plant temperature and up to 25,000 hours lifespan Easy To Use: Simply install T8 GE Grow Light Bulbs as replacements into 48in existing shop light tube fixtures for seedling trays 6in above plants and leave on for 12 hours per day Trusted GE Quality: Unlike other grow lights with misleading claims, GEs are proven to deliver superior performance and reliability; Featured in Good Housekeeping as Top 9 Best Grow Lights for Indoor Plants in 2024