Growing plants and getting great crops seems to many, a mixture of science and craft. 'Craft' is science that people learned from experience; when, how and what to do for a better crop. Harvest Master will add science to fill those knowledge gaps; deliver you professional yields. Harvest Master controllers are suited for pro growers and novices alike. Flowering plants or vegetable crops, hydroponic or soil, grow-room or greenhouse, Harvest Master gets you a GREAT result.