eBay: 2 lamp T5 High Output T-5 five grow light MIXED BULBS (item 180037774573 end time Apr-09-07 07:48:29 PDT)

Comes with 2 lights, 1 grow bulb 1 bloom bulb, will this mean I wont have to change lighting for the different phases of growth?

ps. Does this light contain an adequate amount of power to sustain weed growth?