If the substrate turns green, yellow, or red, it’s best to discard the kit and start fresh.

To prevent contamination spread:

• Move the contaminated kit away from other grow kits and clean areas.
• Thoroughly clean and sanitize any surfaces or tools that came into contact with it.
• If contamination is severe, seal the kit in a plastic bag before disposal to contain contaminants.

To avoid contamination in future grows:

• Use sterile techniques.

Maintain a clean environment throughout the process.