Choosing Fluorescent Tubes for Heliamphora: Lumens, Wattage, and Efficiency

Replacing grow lights for Heliamphora? Focus on lumens per watt and light quality, not just wattage. Modern 32W T8 tubes can outperform older 40W T12s.

What Matters

• Lumens: Total light output. Aim for 3,000+ lumens per tube.
• Color temperature: 6500K (cool white/daylight) for vegetative growth.
• CRI: >80 for better spectrum quality.
• Tube type: T8 or T5 HO are more efficient than T12.

Practical Advice

• If 32W tubes at 3,200 lumens are the best available, use them.
• 40W tubes generally produce more total light if efficiency is equal.
• Compare brands: Philips, GE, Sylvania, or horticultural brands (e.g., SunBlaster).
• Replace tubes annually—output drops 20–30% over 12 months.

Real-World Success

Drosera regia thrives in full sun, 90°F days, <5% humidity—proof that light intensity matters more than humidity for many species.

Match your fixture to the best tubes you can source; prioritize lumens and 6500K spectrum.