Sterile Grain SpawnTubs

Our sterile grain SpawnTubs cater to advanced mushroom cultivators who value efficiency and versatility. These tubs contain high-quality grains such as rye grain, whole wheat, millet, or a combination of all three, ensuring your gourmet mushrooms thrive.

Whether you inoculate through the integrated rubber injection ports or use Agar or Grain-to-Grain (G2G) transfers, these SpawnTubs provide flexibility and reliability.

Why Choose Sterile Grain SpawnTubs?

If you have experience in mushroom cultivation and want a more efficient method than starting from spores, SpawnTubs suit your needs perfectly. Additionally, they excel at Grain-to-Grain transfers, enabling you to expand your existing mycelium quickly and cost-effectively.

For beginners, we recommend starting with an all-in-one kit like our MycoBox Grow Kit to familiarise yourself with the gourmet mushroom growing process. However, if you’d really like to try these sterile grain SpawnTubs, they are part of our MonoBox Grow Kit, which teaches you how to colonise mushroom spawn and transfer it to a substrate.

Key Features

• Lab-Sealed Sterility: We heat-seal each sterile grain SpawnTub in a polypropylene (PP) bag within our lab to guarantee sterility and contamination-free cultivation.
• Easy Inoculation: The integrated rubber injection port features our signature Inject-thru™ system for safe, clean, and hassle-free needle inoculation.
• Enhanced Air Quality: The built-in HEPA air filtration in the lid maintains optimal air quality for healthy mushroom mycelium growth.
• Reusable & Durable: The plastic container withstands multiple sterilisation cycles, offering long-lasting use and excellent value.

Considerations

• Not recommended for beginners – requires prior cultivation experience
• G2G transfers require a Still Air Box (SAB) or flowhood to minimise contamination risks

Included with your Sterile Grain SpawnTubs

• Chlorhexidine alcohol wipe for sanitisation
• Spare sterile needle for inoculation

What You’ll Need

• 1.5-2ml of a gourmet spore or liquid culture syringe (if using syringe inoculation)
• A Still Air Box (SAB) or flowhood (if performing G2G or Agar transfers)

Are Sterile Grain SpawnTubs Suitable for Me?

If you’re new to growing mushrooms, we recommend starting with our beginner-friendly grow kits. However, if you’re experienced and have healthy colonised spawn, our sterile grain SpawnTubs offer an excellent way to expand your mycelium efficiently. For example, Grain-to-Grain transfers save time and resources, letting you skip the spore stage and achieve full colonisation in just a few days.

How to Use the Sterile Grain SpawnTubs

Using a Gourmet Spore or Liquid Culture Syringe

1. Carefully cut open the sealed bag and take out your SpawnTub.
2. Next, clean the grey rubber injection port thoroughly using the provided alcohol wipe.
3. Then, inject 1.5-2ml of the spore or liquid culture solution down the side of the tub for visible mycelium growth.
4. Afterward, place the SpawnTub in a warm environment or incubator to initiate colonisation.
5. For faster growth, maintain a temperature of 26°C. Temperatures as low as 20°C will work, if speed is not a priority.
6. Meanwhile, monitor for contamination and keep the SpawnTub clean throughout the process.
7. Once fully colonised, inspect for any signs of contamination before proceeding to the next stage.

Using Grain-to-Grain (G2G) Transfers

1. Work within a Still Air Box (SAB) or at a flowhood to minimise contamination risks.
2. Transfer a small amount of colonised grain from your existing spawn into the sterile grain SpawnTub.
3. Then, seal the SpawnTub and place it in a warm environment or incubator.
4. Monitor colonisation progress and inspect for contamination before use.

Sterility Guaranteed

We rigorously sterilise every SpawnTub to ensure the highest standards of cleanliness. In the unlikely event of an issue before usage, contact us with photos and details. We’ll diagnose the problem and promptly provide a replacement sterile grain SpawnTub.

Legal Disclaimer

This product is intended solely for the cultivation of legal mushroom species.