All contaminants

Cobweb Mold

Hypomyces/Cladobotryum spp.

Moderate

Appears as grey, wispy strands hovering above the substrate. Its defining characteristic is speed — a dime-sized patch can cover an entire tub in 24–48 hours.

Cobweb Mold — reference photo

Visual Identification

Grey, wispy, cotton-candy-like strands hovering above the substrate surface. Much lighter and more ethereal than mushroom mycelium.

Treatable

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