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A side-by-side product image depicting the regular sized 1kg Millet Grain + 2kg CVG Substrate Regular Refill Pack to the left shows a 1.5kg Millet Grain + 3kg CVG Substrate for the Large Monotub Refill Pack
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Home Spawn & Substrate MonoGrow Kit Refill Bundle (Millet Grain)
A product photo showing side-by-side products in a bundle with a regular size and large size bundle of a mushroom growing monotub, CVG, Millet Grain and Grow Kit in a Regular and Large size.
MonoGrow Kit Mushroom Cultivation Bundle (Millet) £59.95 – £74.95Price range: £59.95 through £74.95
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A side-by-side product image depicting the regular sized 1kg Rye Grain + 2kg CVG Substrate Regular Refill Pack to the left shows a 1.5kg Rye Grain + 3kg CVG Substrate for the Large Monotub Refill Pack
MonoGrow Kit Refill Bundle (Rye Grain) £23.95 – £29.52Price range: £23.95 through £29.52

MonoGrow Kit Refill Bundle (Millet Grain)

£23.95 – £29.52Price range: £23.95 through £29.52

A simple refill bundle for growers running a MonoTub setup.


Includes sterilised millet grain spawn and CVG substrate, ready to mix and colonise.

Perfect for topping up an existing tub or starting a fresh bulk grow.

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What Size Syringe Do I need?

Our bags have a max amount of moisture they can hold, therefore it's important to check how much you need prior to setting up your project! These bags are purpose-made for Gourmet Health Mushroom spores and should be used alongside a bag sealer (for contamination-free second and third harvests) as well as a heat mat or heat chamber to keep the temperatures constant. Please refer to the table below for this information!

Disclaimer

Please note that it is illegal to grow magic mushrooms within the UK. We ask that you do not use these spores to grow mushrooms, but instead use them to study under a microscope. We cannot be held liable for any illegal use of these spores. Please check your local regulations as we cannot be responsible for the laws you should follow in your own country.
Bag Size Syringe Size Bag Sealer Size Heat Mat Size Incubation Chamber Size Predicted Yield Size
1lb Bag 2.5ml Small 7w 40L or 60L 50-75g
2lb Bag 10ml Small 7w 40L or 60L 100-250g
4lb Bag 20ml Large 20w 60L only 350-700g
50/50 Bag 20ml Large 20w 60L only 500g+
1kg Rye 10ml Small 7w 40L or 60L 100-200g
1.5kg Rye 20ml Large 20w 40L or 60L 300-400g
BRF PF Tek Kit 2.5ml Small 7w 40L or 60L 50-75g
Dutch Style 20ml - 20w 60L only 500g+
Sprinklebag 20ml - 20w 60L only 500g+
Oak Hardwood Kit 2.5ml Small 7w 40 or 60L 70-150g
Size Guide
SKU: SS-B-02 Categories: Bundles, Just In, Spawn & Substrate Tags: CVG Substrate Bag, Inject & Grow Mushroom Grow Kit Bundle, Millet Grain Bag, Mushroom Grain Spawn, mushroom grow kit, Mushroom Grow Kit Bundle, mushroom substrate
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Description

Millet Grain Spawn + CVG Bulk Substrate MonoGrow Refill Bundle

Growing mushrooms in a MonoTub setup is one of the most reliable and scalable ways to cultivate at home.
This refill bundle provides the essential components needed to prepare a fresh bulk grow using high quality sterilised grain spawn and CVG substrate.

Whether you are topping up an existing grow setup or preparing a new tub, this bundle provides the right balance of nutrients and substrate for consistent results.

The simple idea

  • Pre-sterilised millet grain spawn ready for colonisation
  • High quality CVG bulk substrate blend
  • Designed for reliable MonoTub growing
  • Simple and efficient refill solution

What you can expect

  • Fast colonisation when mixed at the correct ratio
  • Balanced nutrient environment for strong flush potential
  • Clean, sterilised preparation to reduce contamination risk
  • Ideal for gourmet mushroom cultivation

How to use

  1. Fully colonise your millet grain spawn.
  2. Break up the spawn evenly.
  3. Mix thoroughly with the CVG substrate inside your MonoTub.
  4. Allow the bulk substrate to colonise before initiating fruiting conditions.

Ingredients

Our CVG substrate blend contains:

  • Coco coir
  • Vermiculite
  • Gypsum

The substrate is hydrated to field capacity and prepared under controlled conditions for consistent performance.

Storage

For best results, use soon after delivery.

If storing for later use:

  • Keep millet grain spawn refrigerated
  • Store CVG substrate in a cool, dry environment

What’s included

  • Millet grain spawn (size depends on bundle selected)
  • CVG bulk substrate (size depends on bundle selected)

Not included

  • All in One MonoGrow Kit
  • Spores

Note: This product is intended for the legal cultivation of gourmet and edible mushrooms only. Always follow local laws and safe handling practices.

Additional information
Weight 6001 g
Size

🌿Regular (2kg CVG + 1kg Millet Grain), 🍄Large (3kg CVG + 1.5kg Millet Grain)

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