I would like to thank in advance any help I get. I have used rockwool for the first time.... actually first time growing also. I wet the seeds in papertowels til the popped and got a small root started, I put them rockwool about 1/4 inch down. I covered them with a piece of rockwool, just barely laid it on top so it blocks any light. I put a lid on it and covered with a black towel and put it on top of my dish receiver. I was wondering if it is possible to get them to warm? It looks like they are starting to grow but have not come thru the top yet. a couple have but most have not. They have been in there for app. 4 days now. Can anyone help???