How much light for sprouts

My root tips have sprouted. I removed the plastic covers. How long should I have light/dark on my new plants? I’m a newby, surely I missed this information in the video’s Kyle has put out.

If they just sprouted I would leave the plastic domes on them as they love the humidity and can get their moisture that way for a few days. I had my lights around 250 to 300 ppfd at that stage and watched for any over stretching. I ran 18/6 as I think everything needs to rest.

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Great minds think alike! I adjusted my grow-light to turn off for 6 hours a night.

Thanks for responding