k im on my 3rd week veg now.. plants are about 8-10" tall becoming very bushy-like. i suppose now would be a good time to go ahead and do it? this is my first grow, on my next one ill do things a little more advanced, trying to pace myself and work in steps to make sure i get the most out of my efforts. and gain more knowledge as i go and not try to just jump into it. ill go ahead and cover everything w/ mylar as soon as the sheets i ordered come in(couple days). plants look great so far! thanks for the helpful advice!