Green Thumb Hydro is the one stop shop for the finest selection of Metal Halide and High Pressure Sodium Grow Lights from HydroFarm as well as cutting edge LED Grow Lights from LED Grow Supply.

HID (High Intensity Discharge) Plant Grow Lights

High Pressure Sodium - HPS:

High pressure sodium bulbs emit an orange-red glow. This band of light triggers hormones in plants to increase flowering/budding in plants. They are the best grow lights available for secondary or supplemental lighting (used in conjunction with natural sunlight). This is ideal for greenhouse growing applications.

Metal Halide - MH: 

Metal halide bulbs produce an abundance of light in the blue spectrum. This color of light promotes plant growth and is excellent for green leafy growth and keeping plants compact. It is the best type of light to be used as a primary light source (if no or little natural sunlight is available). The average lifespan is about 10,000 cumulative hours. The bulb will light up beyond this time but due to the gradual decline of light, it is not worth your while to wait for the bulb to finally burn out. If you compare their lumen (brightness) per unit of energy consumed, metal halides produce up to 125 lumens per watt compared to 39 lumens per watt with standard fluorescent lights and 18 lumens per watt for standard incandescent bulbs.

LED Grow Lights: 

LED grow lights are the newest lighting option for plants. They are advertised to be the most efficient and coolest running grow lights available. Here at Green Thumb, we've have tested several different types of LED grow lights and have found that more often than not they outperform much cheaper fluorescent grow lights of similar wattage. 

Light Output Comparison Chart:

As always, should you have questions about grow lights of any type, or heck, questions about any of the products we carry feel free to reach out to us via phone or email!