Hey X - I've always just used the paper towel method. But this time I just put them straight into the rock wool. First time I ever did that, and it worked great. After the 3rd day - they all popped up. Just make sure you soak the rock wool in nuted water first beforel you put the seeds in them. Also, most people soak the seeds themselves over night too. I did not do that. Some soak the rock wool for a few hours, some soak them for 24 hours. I didn't know that, and just soaked them for like 5 minutes. It still worked though.