The second bulb is a MH conversion bulb.

That is a good package deal for the money....:thumbsup:...it's a UL rated, 60Hz, 400 watt HPS magnetic ballast with a HPS bulb and a MH conversion bulb. Can't tell if it comes with the necessary cords?
Dutch Pimp Reviewed by Dutch Pimp on . is this a good deal on a light? 400 WATT HPS CLOSET GROW SYSTEM. - eBay (item 270353250091 end time Mar-11-09 05:07:24 PDT) it seems decent and comes with a growing and flowering bulb. Rating: 5