The temperature control follows the same logic as any home HVAC system. We want to maintain the greenhouse between the temperature range of 20-24C by using a heater or fan when it goes out of those bounds. The humidity levels will actuate a window to open if the air moisture rises above 85% RH. The root misting occurs for 5 seconds in 2-minute intervals. The last control is to fill the water reservoir used to mist the roots when the level falls too low.