When growing indoors, light intensity and spectrum become even more important. The quantity and quality of light are the most critical factors associated with successful plant growth. Regular lamp replacement is essential.
|Lamp Type||Optimal Growth||Average Growth||Maintenance Growth|
|HPS||9-10 months||11-12 months||13-16 months|
|Metal Halide||6-8 months||9-10 months||10-12 months|
|e-Start Metal Halide||9-10 months||10-11 months||11-12 months|