So I just put a kit greenhouse together and I have been fooling around trying to get the temps down so it will be a greenhouse and not an oven. So far I am at 88f at midday and 77f at night. I have a fan going 24hrs for air circulation and wet gravel for a floor. I have put all different manner of plants in it to help control the temps and humidity. ( I don't have enough orchids to fill it up) Anyway I am quite new to this and really enjoying it. Any words of wisdom will be greatly appreciated.