Metal Halide Lamps output blue light which is beneficial in the vegetative growth stage. We also stock HPS lamps for flowering stages.
Metal halide lamps generate a lot of heat, it's important to hang them 12 to 18 inches away from the plant to prevent heat damage and stress to your plants.
The table below provides a summary of coverage and hanging distances for the most common metal halide and HPS bulbs.
|Wattage||Max Coverage||Min Hanging Distance|
|150w||0.6m x 0.6m||7 Inches|
|250w||0.8m x 0.8m||10 Inches|
|400w||1m x 1m||12 Inches|
|600w||1.2m x 1.2m||16 Inches|
|1000w||1.5m x 1.5m||21 Inches|