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Rust oysters


Active member
Very strange this was a completely dry environment with minimal air flow. Notice how the oysters have only attached to the higher supports ? It appears what is inside the steel also matters the lower one has none and has not rusted to the same degree .


Well-known member
Until we spotted these new ones, I had been of the opinion that a high humidity was required for then to form. But this location is extremely dry .


Mrs Trellis

Well-known member