Coal slag, a recycled byproduct from coal combustion, has similar properties of silica. It is inert and does not break down in water. It has a beautiful shimmering black appearance that adds function and visual appeal. Best suited for pinguiculas.
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Coal slag, a recycled byproduct from coal combustion, has similar properties of silica. It is inert and does not break down in water. It has a beautiful shimmering black appearance that adds function and visual appeal. Best suited for pinguiculas.
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