A consumer product for supplementing CO2 is provided with delayed activation control and multiple chambers formed by folding and clamping or with multiple clamps. A bag, having a top and a bottom seal and a filter, contains organisms and food substrate, each prepared under sterile laboratory conditions using aseptic techniques. The bag may be selectively clamped at various locations on its exterior. The mycelial mass having mycelia and food, or mycelia separate from the food may be sealed or partially sealed away from the air exchange portal by clamps or folds. With selective chamber isolation, the organisms are manipulated to delay optimized carbon dioxide generation. Utilizing the present invention will extend the product shelf-life, delaying the expiration of the product for storage and shipping. The fungi are utilized on-demand by removal of the clamp and carbon dioxide flows from the product. Consumers will place the product near indoor plants.