The Grow1 Greenhouse Vaporizer is designed to heat to a necessary temperature for vaporization 284 Fahrenheit (140 Celcius) and will cover approximately 1000sqft. Please Read Before Operation - 1 unit covers approximately 1000sqft - Only perform treatments during the vegetative plant stage - Turn off all fans and ventilation during the treatments - Perform treatments only at night - Evacuate the area during treatment - It is recommended to use this unit in conjunction with a timer so the process may be automated and the user can avoid exposure