

PureGrow Supply Gypsum Powder – Premium Grade Calcium Sulphate for Mushrooms & Gardening – Natural Superfine Additive in Resealable Pouch 1 KG
About this item
- Ultra-Fine Mineral Versatility. This premium-grade gypsum powder (calcium sulphate dihydrate) is finely milled for easy handling, fast dispersion, and smooth mixing. With over 99% purity and zero additives, it’s a clean, consistent mineral trusted by those who value quality and precision.
- Mushroom Growing Game-Changer: Transforms your substrate by improving texture and moisture balance, creating ideal conditions for strong mycelium growth. Trusted by hobbyists and small-scale cultivators. Easy to mix and evenly distributes for consistent results.
- Clay-Busting Garden Essential: A natural soil conditioner that improves drainage by breaking up compacted clay and enhancing water movement. Supplies calcium and sulphur to support healthy plant growth, without relying on synthetic fertilizers.
- Brewing Mineral Must-Have: A go-to mineral for home brewers aiming to fine-tune water profiles and improve clarity. Adds calcium and sulphate to support cleaner fermentation and a crisp, dry finish. Mixes easily and integrates well with brewing salts for reliable results.
- Baking Additive with a Purpose: Naturally mined gypsum is valued in baking as a dough conditioner and calcium source. It helps reduce stickiness, improve texture, and stabilize baked goods. A trusted mineral in culinary applications where purity matters.
Product description
Product description PureGrow Supply Superfine E516 Food Grade Gypsum is a high-purity calcium sulphate dihydrate (CaSO₄·2H₂O), free from additives and finely ground to an ultra-fine consistency. This texture ensures it mixes easily and distributes evenly across different mediums. In brewing, gypsum is used to modify water chemistry by adding calcium and sulphate ions. It helps balance pH, enhance enzyme activity during mashing, and improve clarity and flavour—supporting a crisp, dry finish in the final product. In baking, it functions as a dough conditioner—reducing stickiness, regulating acidity, and improving the texture and stability of baked goods. It also serves as a calcium source, supporting flour treatment and leavening in selected recipes. In mushroom cultivation, gypsum acts as a pH buffer within the substrate. It helps maintain proper structure and moisture balance while providing essential minerals like calcium and sulphur that support healthy mycelium development and consistent yields. In gardening, gypsum serves as a natural soil conditioner, especially useful in compacted or clay-heavy soils. It improves drainage, enhances water movement, and supplies calcium and sulphur without relying on synthetic fertilizers. Packaged in a resealable pouch to keep it fresh and easy to use whenever you need it. Ingredients Gypsum Safety Warning Keep out of reach of children Wear protective gloves, mask, and eye protection Avoid contact with eyes – rinse immediately with water Avoid inhalation – use in well-ventilated areas Do not ingest – rinse mouth and seek medical advice Avoid prolonged skin contact – wash thoroughly with water
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
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