Dual 250w hqi ballast, mogul sockets, reflectors and 4 1/2 month old ushios/blv. I used the hqi to drive lamps such as radiums and ushios that required this ballast.
Do you need to run both ballast, since I only have a 33 gal oceanic cube but I will based on past experience probably try to get a 60 cube next year. Could I just run one side of the ballast? How old are the ballast?