Same room as seedlings. Air temp is upper 70s lower 80s. Water temp, pump just shut off and its 78.5. I have the pump on a timer, on 30 min off 30 min. First 24-48 hours its on constantly.
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As for a light, well, there really isn't one. Lol
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Edit: One trick with clones is to have at least one leaf node in the water. Marijuana doesn't "have" to have one in the water but it's quicker that way. Some plants do some don't. I don't scrape the stems or anything like that. I've found they get mushy sometimes.