SunBlaster CFL Grow Lamp 13W 6400K 4-Pack

Cool Blue 6400K CFL Grow Lamps for Propagation, 4-Pack

Seedlings and cuttings develop more compactly and root more reliably under a cool blue light spectrum than under general household lighting. SunBlaster's CFL Grow Lamp delivers that 6400K cool blue output at 900 lumens per bulb, optimized specifically for propagation and vegetative growth rather than general illumination.

A 10,000-hour rated life keeps replacement frequency down, and this 4-pack stocks a propagation area with enough lamps to maintain consistent light levels or serve as replacements for SunBlaster T5 and compatible CFL fixtures.

Key Features & Benefits

• 6400K cool blue spectrum — promotes compact, vigorous vegetative growth, strong root development, and healthy seedling establishment.
• 900 lumens per bulb — delivers effective light intensity for propagation and vegetative applications in a compact CFL form factor.
• 10,000-hour rated life — reduces replacement frequency and per-lamp operating cost versus standard CFL alternatives.
• 13W energy efficient — keeps operating costs down while delivering the output needed for early-stage plant development.
• 4-pack value — stocking multiple lamps reduces downtime from lamp failure and keeps light levels consistent across a propagation area.

Who Should Use This

Clone producers, seed starters, propagation specialists, and vegetative-stage growers who rely on CFL technology, or who need replacement lamps for SunBlaster T5 and CFL fixtures, benefit from this cool blue 4-pack.

About SunBlaster

SunBlaster, headquartered in Langley, British Columbia, has built its lighting lineup around T5HO and CFL grow lamps designed specifically for horticultural use, with spectral output calibrated for plant growth rather than general household illumination.

Frequently Asked Questions

What is the 6400K spectrum suited for?

6400K is a cool blue spectrum associated with compact, vigorous vegetative growth and strong root development, making it well suited to seedlings, cuttings, and general vegetative-stage plants rather than flowering-stage crops. Growers typically switch to a warmer spectrum bulb once plants transition into the flowering stage.

How long do these lamps last?

Each lamp carries a 10,000-hour rated life, which reduces how often you need to replace bulbs compared to standard CFL alternatives with shorter rated lifespans. The 4-pack format also means a full replacement set is on hand when lamps do eventually need swapping.

What fixtures are these lamps compatible with?

These lamps work as replacements for SunBlaster T5 and CFL fixtures, or in any compatible fixture using the same base type. Confirm your fixture's socket type before ordering if you're using a non-SunBlaster fixture.

Why buy a 4-pack instead of a single lamp?

Stocking multiple lamps means a single bulb failure doesn't interrupt your propagation area's light levels, since you have replacements on hand immediately. It's also typically a better per-lamp value than buying bulbs individually.