SUNPACK T5HO Replacement Grow Lamp - 24in - 6400K

Maintain Peak T5HO Performance with SUNPACK Replacement Grow Lamps

The SUNPACK 24in T5HO Replacement Grow Lamp delivers the 6400K full daylight spectrum and high-output fluorescent intensity that T5HO grow setups depend on for strong propagation results. As T5HO lamps progressively lose output over their 9-12 month average lifespan, replacing them with fresh SUNPACK tubes restores the light intensity your seedlings, cuttings, herbs, and leafy crops need to maintain consistent growth rates and healthy development throughout the growing cycle.

Key Features & Benefits

• 6400K full daylight spectrum - The cool 6400K colour temperature provides the blue-rich light that encourages compact, vigorous vegetative growth in seedlings and cuttings - the same proven spectrum used in professional propagation environments worldwide.
• High-output T5HO intensity - Delivers the high photon flux that T5HO fixtures are designed to produce, restoring full system performance when replacing aged or end-of-life tubes that have lost significant output.
• 24in direct replacement format - Matches the standard 24in T5HO bi-pin tube format for straightforward installation in any compatible T5HO fixture without adapters or modifications.
• 9-12 month average lamp lifespan - Designed for the continuous-duty light cycles of indoor grow rooms, providing reliable output throughout a full growing season before replacement is needed.

Who Should Use This

Home growers and commercial propagation operations running T5HO fluorescent fixtures who need reliable, affordable replacement lamps to maintain their system's full light output. Regular tube replacement at the end of each growing season or every 10,000-12,000 hours ensures consistently strong results from your T5HO grow light investment.

Compatibility

Designed for all standard T5 High Output fixtures using 24in bi-pin T5 lamps. Verify your fixture uses T5HO (not standard T5) lamps before ordering. Not compatible with T5 standard output, T8, or T12 fixtures.

Frequently Asked Questions

How do I know when my T5HO lamp needs replacing?

T5HO lamps lose output gradually - often imperceptibly until growth rates slow noticeably. As a best practice, replace lamps every 9-12 months of regular use (or at the 10,000-12,000 hour mark for continuous-duty setups) to maintain consistent plant performance, rather than waiting for visible signs of lamp failure.

Is 6400K the right spectrum for all growth stages?

The 6400K cool daylight spectrum is ideal for vegetative growth, seed starting, and propagation. For flowering stages, a 3000K warm-spectrum lamp is generally preferred to support reproductive development. Many growers use 6400K throughout propagation and early vegetative stages, then transition crops to a different light system for flowering.

Can I mix SUNPACK replacement lamps with other T5HO tube brands in the same fixture?

Yes - standard T5HO bi-pin lamps of the same physical size are interchangeable between brands within the same fixture. For best results and consistent light quality, replacing all tubes in a multi-lamp fixture at the same time is recommended.

Are these tubes sold individually or in multi-packs?

Check the specific listing quantity. SUNPACK T5HO replacement lamps are available in single and multi-pack formats - buying in bulk reduces per-lamp cost for operations running multiple T5HO fixtures.