Grain and Substrate Refills for Mushroom Monotubs
Grain and Substrate Refills for Mushroom Monotubs
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Currently 1-4 working days
You’ve bought a monotub from us, grown some lovely mushrooms, and now you’re needing to restock on the main consumables: sterile grain and substrate!
We’ll send you the perfect quantities to get you back up and cultivating with a fully-stuffed tub, and we’ll even let you choose what grain you prefer:
- Millet for the handsome lad around town
- Milo for people that think millet is too small and get a bit odd about it
- Popcorn for cinema perverts
- Triple Mix for the tapas fans
- Rye for people that know what they want thank you very much
✅ Choose your tub from the dropdown box up top
✅ Then choose your flavour of grain
✅ We will send you the perfect amount of sterile grain and substrate
✅ That is it, it’s pretty simple isn’t it
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When your order arrives:
Take out of the packaging!
The number one cause of contamination is leaving bags in the original packaging for too long. Remove all sterile grain and substrate from the packaging when it arrives. Allow air to reach the white filters.
Check for damages
Before you get to work, have a quick check of all bags to ensure no splits or damage has occured during transit. If you find any damages or issues
Storage
Store grain and substrate in a cool dry place (not the fridge). Use by date on the bag although the highest chance of success comes from using the product at it's freshest.
Grain and Substrate Refills for Mushroom Monotubs

Video Instructions for inoculation
We made a nice little video ages ago which shows how to inoculate your grain bag.

Have questions about your sterile grain?
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Manufacturer
MycoPunks Ltd
Unit 24A Morelands Trading Estate, Bristol Road, Gloucester, GL1 5RZ, UK
Responsible Person
Euify OSS B.V. T.A.V. (MycoPunks Limited)
Prinses Margrietplantsoen 33, 2595 AM, Den Haag, The Netherlands
Safety Information
May contain the following allergens : Rye, oats, wheat, millet, coconut, peanuts, corn, red dari, sorghum, horse manure, soya.
Keep out of reach of children
Risk of suffocation
Reuse / Recycling / Disposal
Contents can be composted.
Check local waste facilities for polypropylene recycling.