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Contamination · guide

Contamination

Migrated from Psilobase v1 · editorial review pending · source: /growing/visual-contamination-guide

Golden Rule: If in doubt, throw it out. Never open a contaminated jar or tub inside your grow area.

Trichoderma ("Trich")

The most common enemy. It is a parasitic mold that eats mycelium.

Identification:
  • Starts as brilliant white, fluffy patches (whiter than mycelium).
  • Turns forest green within 24 hours as it sporulates.
  • Texture is dusty/powdery.

Cobweb Mold

Often confused with mycelium, but it's distinct once you know it.

Identification:
  • Greyish color (not pure white).
  • Grows 3D (stands up high above surface).
  • Grows incredibly fast (covers tub in 24hrs).
  • Test: Spray with peroxide. If it melts instantly, it's cobweb.

Bacillus (Wet Rot / Sour Rot)

Bacteria usually from endospores surviving sterilization or too much moisture.

Identification:
  • "Wet spots" pressed against the glass.
  • Grains look slimy or creamy.
  • Smell: Sour, rotting apples, or dirty socks. (Healthy mycelium smells like fresh mushrooms).

Lipstick Mold (Sporendonema)

A slow-growing but dangerous mold. Can change color from white to pink to red.

Identification:
  • Distinct pink, red, or purple color.
  • Often starts as white crystalline growth.
  • Do not breathe this in.

Metabolites ("Myc Piss")

This is NOT contamination. It is an antibiotic secretion from the mycelium.

Identification:
  • Yellow to orange liquid.
  • Clear, not cloudy/slimy.
  • Cause: Mycelium is stressed (fighting bacteria, too hot, or too dry). Fix conditions.
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