This is a great alternative to buying both a MH and HPS Grow Light Ballast. A Metal Halide (MH) grow bulb is so important to your Hydroponic plants during the growth cycle. This grow light bulb will give the plants what they need in proper spectrum, while saving you money on a MH grow ballast.

 

Use your 600 HPS Ballast to strike this MH Conversion Bulb! The Conversion grow light bulb has 57,000 Lumens, 10,000 Light Hours.