From a fellow grower: I am getting a grow tent for my autoflowers, is it necessary to have ventilation going in and out of the tent? And do I feed them after the first week with nutrients
Yes you need ventilation for several reasons. Air exchange, heat and humidity control . You should also have a regular fan inside the tent to circulate air around your plants. As far as feeding goes most don’t feed until the little round leaves that first came out after sprouting start to yellow. This also depends on what kind of medium you’re growing in . You should join the forum and fill out a support ticket . Ask any questions you have. Lots of experienced growers here that willing to help .
To add to this part of the subject, controlling heat and humidity, also controls mold issues. Air exchange keeps humidity down, which inhibits mold growth because of the air exchange.