Packed with the most up-to-date facts and figures on Co2, Gardening Indoors with Co2 shows how to put Co2 to work in your garden room or greenhouse for super results. Plants use up to five times more Co2 than naturally occurs in the air, so this book shows how to double plant growth and harvest; how to get the most out of Co2 enrichment; set up a Co2 emitter and generator system; growing cuttings and seedlings and the best ventilation system using Co2.