Grow Crew High Output (HO) 4' T5 54w Bulbs - 2800K
These High Output (HO) T5 bulbs take into consideration the proper kelvin temperature when it comes to growing plants. The warm bulbs are 2700k to 3500k, while the cool bulbs are 5400k to 6500k. These bulbs will work with any T5 HO 4' fixture and are brighter than any others on the market.