HD only has 400 watt but they do have MH & HPS. If you need larger wattage try 1000bulbs.com or call a local electric supply house. Most of them sell to the public they don't want to loose the business.

Peace
Zandor Reviewed by Zandor on . HPS Bulbs Does anyone know where I can buy HPS light bulbs? Are they at like walmart or Home Depot? Because I havn't found any labeled as such. Thanks. Rating: 5