My intention is only to enjoy the thrill of smoking my own babies and NOT to sale to others, strictly ONLY personal use, and it is good when having sex too, I don't know why but it intensifies my orgasm.
You do not want any light getting at the seed or the tap root. I would say that you should put something there or pinch the rockwool together to keep out the light. Better yet is to keep it in the dark until the seedling breaks through. Many people like to germinate first and then plant. You can read up on germinating in the GrowFAQ located at the top of each page. Hope that helps.