Grow Light Usage Tips
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Type of Lamp |
Light Coverage |
Light Coverage w/ sunlight |
Cost per 16 hr. day @ 5 cents per KWH |
Light Spectrum |
Metal Halide, MS (MH) |
175 Watt
250 Watt
400 Watt
1000 Watt |
2' x 2' (4 sq ft)
3' x 3' (9 sq ft)
5' x 5' (25 sq ft)
8' x 8' (64 sq ft) |
3' x 3' or 9' sq
5' x 5' or 25' sq
8' x 8' or 64' sq
12' x 12' or 144' sq |
$0.14
$0.20
$0.32
$0.80 |
Metal Halide is high in blue light, MS is also high in blue with a 30% boost in Orange/Red light and more lumen output. |
Full Spectrum Daylight (MH) |
250 Watt
400 Watt
1000 Watt |
3' x 3' (9 sq ft)
5' x 5' (25 sq ft)
8' x 8' (64 sq ft) |
5' x 5' or 25' sq
8' x 8' or 64' sq
12' x 12' or 144' sq |
$0.20
$0.32
$0.80 |
Very high in Blue light, also in Orange/Red light. A full spectrum light source. |
High Pressure Sodium (HPS) |
150 Watt
250 Watt
400 Watt
600 Watt
1000 Watt |
2' x 2' (4 sq ft)
3' x 3' (9 sq ft)
5' x 5' (25 sq ft)
7' x 7' (49 sq ft)
8' x 8' (64 sq ft) |
3' x 3' or 9' sq
5' x 5' or 25' sq
8' x 8' or 64' sq
10' x 10' or 100' sq
12' x 12' or 144' sq |
$0.12
$0.20
$0.32
$0.48
$0.80 |
Orange/Red light, high lumen output per watt. |
Son Agro (HPS) |
270 Watt
430 Watt
1075 Watt |
3' x 3' (9 sq ft)
5' x 5' (25 sq ft)
8' x 8' (64 sq ft) |
5' x 5' or 25' sq
8' x 8' or 64' sq
12' x 12' or 144' sq |
$0.21
$0.34
$0.86 |
Orange/Red light, with a 30% boost in Blue light over standard HPS lamps. |
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Fluorescent Lighting Area Coverage Recommendations
We recommend mounting your fluorescents 2-4" over the tops of your plants.
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24" Tubes |
For Stronger Light
2 Tubes - 2 Square Feet (2' X 1')
4 Tubes - 4 Square Feet (2' X 2') |
For Lower Light
2 Tubes - 3.75 Square Feet (2.5' X 1.5')
4 Tubes - 7.5 Square Feet (2.5' X 3') |
48" Tubes
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For Stronger Light
2 Tubes - 6 Square Feet (4' X 1.5')
4 Tubes - 12 Square Feet (4' X '3) |
For Lower Light
2 Tubes - 9 Square Feet (4.5' X 2')
4 Tubes - 18 Square Feet (4.5' X 4') |
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