Grow Light Bulbs 4 Ft 46 Inches, 54W 6500K HO Fluorescent Tubes Light Bulbs, Cool White T5 Bulb for 46 Inches T5 Light Fixtures, T5 Grow Lights for Indoor Plants, 4 Ft 54W Pack of 5

‌Long-Lasting: The average recommended usage life is well over 20,000 hours, exceeding the lifespan of almost any HID lampGentle on Seedlings: 54 Watt bulbs put out 5000 Lumens, nurturing seedlings and tender foliage safely even at close range and in cramped spaces ( Package Includes: 5 bulbs)very low heat emissions reduce or eliminate the need for expensive ventilation and air conditioning Long-Lasting: The average recommended usage life is well over 20,000 hours, exceeding the lifespan of almost any HID lamp Gentle on Seedlings: 54 Watt bulbs put out 5000 Lumens, nurturing seedlings and tender foliage safely even at close range and in cramped spaces ( Package Includes: 5 bulbs) very low heat emissions reduce or eliminate the need for expensive ventilation and air conditioning