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So I tested charcoal vs. moss as a drainage layer in two identical jars
I made two small fern terrariums in the same kind of jar about a month ago. One got a half-inch layer of activated charcoal bits under the soil, the other got the same amount of sphagnum moss. The moss jar started smelling a bit funky after just two weeks, but the charcoal one still looks and smells fresh. I think the charcoal really does a better job keeping things clean. Has anyone else found a clear winner for their drainage setup?
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paigec142mo ago
Makes me want to try mixing both layers together.
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stone.thomas1mo ago
You might be onto something there. Mixing them could give you a nice balance between the two textures without losing what makes each one work on its own.
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