If it hasn't actually sprouted yet, I would keep it covered.. Once the cotyledons pop out then uncover it from pebbles... But you should some light so it knows which way is up... Make sure they aren't directly under a high powered light while they are still sprouts.
Illusion Reviewed by Illusion on . Got my seedling in rockwool Taproots out, got her in rockwool + claypebbles in my plant pot over reseviour. Got my seed about half an inch down into the rockwool. My question is, should I have the top of the seed exposed to the lighting yet? atm I have the top of it covered with pebbles for saftey, but do I want her exposed yet? Rating: 5