I've got six plans going in my 4 x 4 with some vegetable seedlings as well. I put up a screen to reduce par values and it seems to work. I was getting some browning starting to occur, I send out the plants turned the fans up and reduced humidity down to 60%. I think there was not enough airflow. They look happier this morning! I'm getting better at listening and watching and adjustto what the plants need, it's pretty cool!