High output T5 replacement bulbs 4ft

$47.49

Last updated 2026-11-03

This set of five fluorescent bulbs is designed for high output T5 fixtures commonly used in seed starting and cloning. Each bulb measures 46 inches in length and fits standard four foot light banks. They provide a cool white light that mimics natural daylight, which is ideal for the early vegetative stages of plant growth.

The 6500K color temperature is specifically chosen to encourage compact growth and prevent seedlings from becoming leggy. These bulbs are a standard replacement option for growers who prefer traditional fluorescent technology for their nursery setups. They offer a reliable way to refresh an existing lighting system without replacing the entire fixture.

These tubes are efficient for their size and provide consistent light distribution across a flat tray of plants. Because they run relatively cool, they can be placed close to the canopy without the risk of heat damage. This makes them a staple for gardeners who start their vegetables or flowers indoors before the spring season.

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