Metal Halide Lighting
Here is a shopping list to create an easy metal halide lighting solution. As a rule 1 light per 10 square feet. This will produce about 150 foot candles of light which is perfect for low light tropical plants. When growing herbs or other plants with higher light requirements, double this to determine what is best in your conditions.
Metal Halide Track Fixtures - 1 per 10 square feet
Metal Halide Bulbs - 1 per 10 square feet
4' Track (max 4 fixtures)
8' Track (max 8 fixtures)