Small-Batch Monotub Substrate Mix (2.5 lb)

Sterilized. Manure-Free. Built for Clean, Efficient Grows.

This small-batch monotub substrate mix is designed specifically for dung-loving mushroom species while remaining 100% manure-free. The formulation delivers excellent water retention, balanced nutrient availability, and optimized pH, creating ideal conditions for strong colonization and reliable fruiting.

Each bag is professionally prepared using a multi-stage pressure sterilization process for maximum cleanliness and consistency. After processing, the substrate is portioned into smaller 2.5-lb units, then re-sterilized, double-sealed, and vacuum-packed to extend shelf life and reduce contamination risk.

This compact format solves a common grower issue — no more opening large substrate bags and wasting unused material. Use exactly what you need, when you need it.

Features

• Ideal substrate for dung-loving mushrooms (manure-free)

• Optimized pH and moisture capacity

• Multi-stage pressure sterilized for cleanliness

• Fully sterilized and ready to use

• Vacuum-sealed, double-bagged packaging

• 22-micron filter patch for clean gas exchange

• Self-sealing injection port for easy, low-contamination inoculation

• Perfect for small monotubs or in-bag fruiting

Use: Inoculate with fully colonized grain spawn in a clean environment. No mixing or rehydration required.

Storage: Store unopened in a cool, dry place away from direct sunlight.