You don't want an air conditioner in the tent. The cold air blowing on it will be too much and can herm your plants. Keep the A/C on the outside of the tent and if you have to, unzip the tent a little in the front and on the sides. Keep a thermometer on the inside of your tent and make sure you have one in the room, outside of the tent so you can gauge how cool the room has to be in order for the tent to be cool enough inside.