Yes you can add the led at any time, the more light the better. Although a higher Kelvin temp is recommended for vegging, it will still help your grow.
Closetgrowin Reviewed by Closetgrowin on . WHEN IS THE VEGETATION STAGE? I NEED TO FIGURE OUT WHEN THE VEG STAGE STARTS AND HOW LONG THE LIGHT PERIOD IS .I HAVE BEEN 24/7THE PLANT IS ONLY 2 INCHES UNDER A 40WATT F40T12 PHILLIPS PLANT&AQURIUM LIGHT ANY HELP WOULD BE NICE. Rating: 5