When to change my grow light bulbs?

I have used my grow light for several months. They seem to dim.

CMH/MH bulbs: 6-8 months

HPS bulbs: 9-10 months

Fluorescent bulbs: 8-9 months

MORE: What Are The Main Types of Grow Lights?

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What Is Daily Light Integral (DLI)?
Adelyn Ward

What Is Daily Light Integral (DLI)?

Despite numerous advancements in greenhouse designs, achieving precise control over light remains a challenge in most greenhouse applications. Due to the unpredictable nature of weather

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