Newbie Question

[props]

Hey guys I'm starting up a new tank pretty soon and I'm fairly new to reef. Anyways got a 500w MH full spectrum light for freshwater I wonder if the light bulb would be suitable for reefs. It's not bluish kinda color so i'm a lil concern. Do i have to purchase a new bulb? change the ballast?
I'm new at this so any help would be much appreciated..will post specs for the ballast tom..
thanks