[header] How to grow houseplants with grow lights [title] Choose the appropriate type of grow lights. [step] There are 3 types of bulbs that work well as grow lights: metal halide, high pressure sodium (hps), and fluorescent. Each type of light fixture has its own advantages and drawbacks. 
[substeps] Metal halide bulbs are compact and efficient, producing a very intense light from a small bulb. These bulbs are rich in blue wavelengths of light, which helps encourage leafy growth in plants.