MyCO2 Secondary Decomposer

Premium Sterile Substrate

Double Rinsed Premium Coco Coir Mixture

My CO2 Secondary Decomposer Substrate (SDS) was developed due to market demand for a premium sterilized substrate customers can use to grow whatever mushroom culture they prefer, without the need to invest in expensive equipment. In addition, through the application of self healing inoculation ports, My CO2 SDS reduces the learning curve associated with the typical aseptic technique required to grow mushrooms without contamination. Customers can purchase spore or culture syringes from their prefered vendor and perform inoculations without jeopardizing the sterility of the substrate utilizing a little Isopropyl and a lighter.

Secondary Decomposers are mushrooms that follow up where the primary decomposers left off, further decomposing the duff / mulch like material. Popular mushroom varieties that are typically grown on coco coir and similar mulch / duff / compost  based substrates are Portobello Mushrooms, Button Mushrooms, Cremini Mushrooms, and more! MyCO2 SDS will support the growth of Psilocybe Mushrooms, however we do not condone the use of our products to grow illegal substances.


  • Self healing inoculation port
  • Premium Sterilized Double Rinsed Coco Coir Mixture
  • 1 year shelf life
  • usable as passive CO2 generator
  • Grow customer selected mushroom varieties