i find it hard to say "harvest when blah looks like blah." just looking at the trichomes are a pretty good way to do it, but the best way to do it is just to combine a little bit of every technique. watch the pistils, new pistils should be popping out every day or so. when this slows down check your trichomes. the chart up there is a good thing to follow. most people dont pay attention to pistils but i say that if more pistils are popping out every day and you have some cloudy/amber trichomes, let it grow and swell. remember,crystals are a great indication of how to set up your time table, but it shouldn't be the final factor. a good deal of what you feel does come from those trichomes, but a good deal of what you feel also come from within the flowers themselves. also, keep in mind all trichomes are not created equally, there are varying degrees of potency. so just because something is completely dusted over doesnt mean its going to knock your socks over; it is pretty though. i hope this rambling makes sense... anyways, is that a bag seed grow?