How Long Do T5 Grow Bulbs Last

Time: With typical daily photo periods of 8-12 hours, T5 bulbs carry the average life-span is 9-12 months. If it’s been more than 12 months since your last bulb change, it’s probably time for a change.

How do I know if my T5 bulbs are bad?

1. Check the ends of the tube. If they appear darkened this indicates the bulb is burned out.
2. Rotate the tube in the fixture if the bulb is not darkened on either end.
3. Remove the bulb from the fixture if the bulb is still not illuminating.

When should I replace my grow bulbs?

But on average, you should use each lamp no more than: 4000 – 5000 hours (HPS) 3000-4000 hours (CDM) 2000 – 3000 hours (MH)