Grozone Control designs and manufactures quality climate controllers for your indoor garden and greenhouse. From precise Co2, RH and Temperature controllers, to cycle timers, tempstats or CO2 Generators, Grozone supplies all you need to help you control the climate inside your indoor garden or greenhouse. Grozone models are available for gardeners at any budget level with some of the most affordable controllers on the market like the Ultra Simple CO2 controller. Get your garden in the Grozone to boost your harvest now!