Color Temp (K) - Color temperature is a way to describe the light appearance provided by a light bulb (lamp). It is measured in degrees of Kelvin (K) on a scale from 1,000 to 10,000. In general, 2,000K will emit a red/orange spectrum which is ideal for the flowering phase of a plants life. A 4,000K - 10,000K color temp will emit a bluish spectrum which is used during the vegetative phase.

Fluorescent Bulb Length - Refers to the length of the fluorescent T5, T8 or T12 bulbs. Easily filter by size to find a fluorescent fixture or replacement bulbs.