Calcium Carbonate (Chalk) Mushroom Supplement

A vital supplement for balancing pH in mushroom substrates and casing layers. Commonly used in gourmet and medicinal mushroom cultivation, calcium carbonate helps maintain an ideal environment for healthy mycelial growth by buffering acidity and stabilising conditions. ✅ Essential for sterilised & pasteurised substrates & casing mixes ✅ Supports optimal pH for species like oyster, lion’s mane & more