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50L Vermiculite for casing layer / hydration of mushroom substrates (Fine / Medium)
Often used to retain moisture evenly throughout substrate, vermiculite is commonly used as part of CVG and PF/BRFTek substrate creation.
It's is available in two grades (Fine and Medium).
- Natural, non-toxic compost component
- Vermiculite is porous and holds water
- Cation exchange properties (holds nutrients in the soil)
Comes in 50L bags (Approx 5KG)