1. What is a Grow Light Coverage Calculator?

Definition: This calculator estimates the area that can be effectively covered by a grow light based on its lumen output and desired light intensity.

Purpose: It helps indoor gardeners and hydroponic growers determine the optimal coverage area for their grow lights to ensure proper plant growth.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Coverage — Area that can be effectively lit (square feet)
• Lumens — Total light output of the grow light (lumens)
• FC — Desired light intensity (foot-candles)

Explanation: The total light output (lumens) is divided by the desired light intensity (foot-candles) to determine the maximum coverage area.

3. Importance of Grow Light Coverage

Details: Proper light coverage ensures plants receive adequate light for photosynthesis without wasting energy or causing light burn.

4. Using the Calculator

Tips: Enter the total lumens of your grow light and the desired foot-candle level (default 2000 fc for general plant growth). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are typical foot-candle requirements?
A: Seedlings: 2000-3000 fc, Leafy greens: 2000-5000 fc, Flowering plants: 5000-10000 fc.

Q2: How do I find my grow light's lumen output?
A: Check manufacturer specifications or use a light meter to measure output.

Q3: Does this account for light falloff at edges?
A: No, this calculates maximum theoretical coverage. For even coverage, reduce the area by 20-30%.

Q4: What's the difference between lumens and foot-candles?
A: Lumens measure total light output, while foot-candles measure light intensity at a surface.

Q5: How does height affect coverage?
A: Higher mounting increases coverage but decreases intensity. You may need to adjust foot-candle value accordingly.