How to Choose the Right Grow Light Wattage for Indoor Plants
Target 30–40 watts per square foot for flowering plants and 20–25 watts per square foot for seedlings or leafy greens to ensure optimal growth. Match your total fixture wattage to your grow tent square footage to maintain high photosynthetic activity. While wattage serves as a helpful shortcut for power, always consult manufacturer PPFD maps to verify the actual usable light delivered to your canopy.
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