Most of mine popped within 48 hours that was with the papertowel method...I just got the towel wet put it in a glad plastic container and put them on the shelf above my light for warmth. Now I just wet the peat disk and drop in the seed and put in the container and they all have popped open. I have been real lucky in all aspects of Lowryders so far....oh chit I shouldn't have said that now I'm open for a problem.....lol...