The GROLUX DUAL SPECTRUM LAMP, can you use it for both veg and flower? Because I found this 600W COMPLETE GROLUX GROW LIGHT KIT HYDROPONICS NEW! on eBay, also Hydroponics, Plants Seeds Bulbs, Garden Plants, Home Garden (end time 26-Nov-08 10:07:20 GMT), which I think is more then enough watts to grow my own 2/3 plants a go, and So I was just wondering would I be able to use that bulb throughout the hole time of the plants life, and if yes is it as good as having 2 separate bulbs, or would to separate bulbs be better that this?