Substrate Reuse: Reclaiming Coco & Re-Sterilizing Rockwool
The economics and risk of running a second crop on the same media, the coco reclaim protocol (rinse, re-buffer, amend, pathogen screen), rockwool steam sterilization and the fiber-integrity ceiling, and when reuse is false economy.
Reuse trades media cost for risk and labor
Both substrates can run more than one crop, but reuse is never free — you are trading a media purchase for pathogen risk, salt residue, and reconditioning labor. The decision is operational, not moral: a room with tight sanitation and a pathogen-screening habit can safely reclaim; a room fighting HpLVd, Fusarium, or Pythium should treat spent media as a disease vector and dispose of it. Know each substrate's reuse ceiling before you build a reclaim line.
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