AGROSUN Gold Halides help plants to grow their best! These spectrally-enhanced halides are the best all-purpose growth for fruiting/flowering light you can use. They emit more of the red wavelengths than the common halides. They are the "Gold Standard" metal halide bulb in plant growth lighting, and thousands are in use by satisfied gardeners worldwide. AGROSUN Gold Halides are super halides with MORE red for flowering than other common halides.