Gold Halides help plants grow their best! These spectrally-enhanced halides are the best all-purpose growth and fruiting/flowering light you can use. Gold Halides metal halide bulbs emit more of the red wavelengths than the common halides. They are the "Gold Standard" 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.