Essential for mushroom growth: Gypsum powder is an essential ingredient in creating the ideal substrate for mushroom cultivation for several reasons such as pH adjustment, calcium supplementation, water retention, and allow for better oxygen circulation and mycelium development. Promotes healthy growth: Our premium-grade gypsum powder provides the necessary pH balance and essential nutrients (calcium and sulfur) for mushrooms to thrive. Enhances water retention: Gypsum has a unique ability to absorb and retain water, which can help to regulate moisture levels in the substrate. Reduces clumping: Adding gypsum to the substrate can help to reduce clumping and improve the overall texture of the substrate, which is important for air circulation. Solution Grade Gypsum: High-purity form of gypsum is an ideal soil amendment that improves soil structure, reduce soil erosion, and supply essential nutrients such as calcium and sulfur to plants and mushrooms. 97% calcium sulfate dihydrate. Olympus Myco premium-grade gypsum powder is a vital ingredient in creating the ideal substrate for mushroom cultivation. It is also a rich source of calcium and sulfur, which are essential nutrients for healthy mushroom growth. Additionally, our gypsum powder improves water retention, regulates moisture levels, and prevents clumping, resulting in better air circulation. Our solution grade gypsum is a high-purity form of gypsum that is finely ground and designed to quickly dissolve in water. It is an ideal soil amendment that can improve soil structure, reduce soil erosion, and supply essential nutrients such as calcium and sulfur to plants and mushrooms. In addition, solution grade gypsum can be used in industrial processes as a source of calcium and sulfur. Whether you're a beginner or an experienced mushroom cultivator, our gypsum powder is an essential component of your mushroom growing kit, helping to promote robust and healthy mushrooms.