Agrosun Gold MH Horizontal H/O Environmental Controllers Concentrated kelp is an exceptional

Concentrated kelp is an exceptional value for all growers

Teel fill-and-drain fitting for GH systems

Replaceable electrode to provide long life and value

light timer

Agrosun Gold MH Horizontal H/O Environmental Controllers Concentrated kelp is an exceptionalAGROSUN Gold Halides help plants to grow their best! A Hydrofarm exclusive, these spectrally enhanced halides are the best all purpose growth and fruiting flowering light you can use. They 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.