Got a question for you light smart guys ^^

as of late ive been reading about how i should be using a 5700 light spectrum bulb for vegging and a 2700 for flowering ( think those numbers are accurate, if they arent they are atleast close). I use all cfls and i was curious as to if there is a way to tell exactly what light spectrum the bulbs putting out by looking at the bulb itself? I bought the parts for and setup a rubbermaid box grow a while ago and ive just gotten into flowering and id like to make sure i have the 2700's in there. I know i could just go out buy some of them and put them in but id rather not waste the money if i already made the mistake of using them for vegging. So...anyone got an anwser for me? ^^

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