Hi Mirela,
was it the larger micro perforated bags that you were looking for? Here’s a link for those which we source from the Netherlands: http://www.eblaak.com/eng/materialen-en.asp
We mainly use these larger bags in our farm, and the smaller 10T and 3T Unicorn filter patch bags sometimes as well.
To clarify what Eric said regarding spawn rates – we used to use 15% a few years back when we were still experimenting with growing on coffee grounds. The higher rate increases chances of success which is why we would recommend starting higher and then reducing it once you have had some bags grow well and have got a feel for the process.
We are about to update all the course materials in the next couple of weeks and the ideal mix that we will teach will just be 3 ingredients:
– coffee grounds
– pasteurised straw (20% of coffee weight)
– spawn (10% of coffee weight)
This should give you good results with a substrate mix up to 3kg in each bag. If you grow with larger amounts per bag then you need to increase the straw to 30%.
It is best to get the process right in smaller bags and then move to larger bags later, as besides using the ideal mix there are lots of small things you will get an intuition about from watching how the mycelium behaves. This knowledge is useful when you grow in larger bags as you tend to encounter more problems and you then have a good idea of how you can rectify them.
Hope that makes sense – feel free to ask more if not.
best wishes, Adam
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