For the first three days leave your dome on opening once a day to let some fresh air in. Around three days in crack your vents. At around a week you should be able to remove your dome for a few hours at a time. 10-14 days you should be able to remove it altogether.
A lot of this has to do with how strong your clones are. Stronger stems can take lower humidity. Weaker stems need higher humidity longer.
The key to cloning is to have thicker stems with tight nodes. The more nodes you can get beneath your media the better. I shoot for a min. of two. 3-4 preferable.
hope this helps
joe
