Global Garden Friends Dewey Mister Made in USA; Simple to install, simple to use just connect to an air pump Saves energy using low wattage air pump and uses far less water and nutrients No clogging! Even running 100% organic nutrient mixtures is no problem as there is no nozzle to clog 100% air driven water pump keeps your reservoir water at the perfect temperature with no heat necessary Can also be used for mixing and aerating compost teas or reservoir nutrients