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Interlux T5 Grow Bulb 4': Dual-Spectrum 54W Fluorescent for Veg and Bloom
The Interlux T5 Grow Bulb 4' is a 54W fluorescent lamp available in two spectrum variants — 3000K for flowering and 6500K for vegetative growth — giving growers the ability to match their light spectrum precisely to each growth phase without changing fixture hardware. The 3000K variant concentrates energy in the warm red range that drives bloom metabolism, while the 6500K runs a cool blue spectrum that promotes the tight node spacing and strong branching structure plants need during veg. Both variants are designed for compatibility with LuxStar T5 lighting fixtures.
Energy-Efficient 4-Foot T5 Lamp for Indoor Growing and Propagation
At 54 watts, these T5 lamps deliver high light output relative to their energy consumption, making them a cost-effective solution for propagation rooms, clone stations, seedling areas, and supplemental side-lighting in larger grows. The 4-foot length fits standard T5 fixture bays, and the fluorescent format runs cool enough to place close to the canopy without heat stress — an advantage for young plants and cuttings that benefit from proximity to the light source. Compatible with hydroponic, aquaponic, and soil-based setups. Sold in quantities of 12.
Key Features
- 3000K Bloom Spectrum: Warm red output optimized for flowering and fruiting stages, driving bloom metabolism in the specific wavelengths plants use for bud development
- 6500K Veg Spectrum: Cool blue output promotes compact vegetative structure, tight node spacing, and strong lateral branching during the growth phase
- 54W Energy-Efficient Design: High light output relative to power draw keeps energy costs low for propagation rooms and supplemental lighting applications
- LuxStar T5 Compatible: Designed to fit and function seamlessly with LuxStar T5 lighting fixtures for reliable drop-in replacement
- Low-Heat Canopy Proximity: Fluorescent format runs cool enough to position close to young plants and cuttings without heat stress or light burn
Technical Specifications
| Specification | Value |
|---|---|
| Lamp Type | T5 Fluorescent |
| Wattage | 54W |
| Length | 4 Feet |
| Spectrum Options | 3000K (Bloom) / 6500K (Veg) |
| Compatible Fixtures | LuxStar T5 |
| Sold In | Quantities of 12 |
| Growth Phase | Bloom (3000K) / Vegetative (6500K) |