They need gas exchange. Too much co2 isn’t good for mycelium growth But also is crucial.. lol. I do self healing heat resistant basically caulk and pillow stuffing. Poly fill.
Shroomok's choice on Amazon
They need gas exchange. Too much co2 isn’t good for mycelium growth But also is crucial.. lol. I do self healing heat resistant basically caulk and pillow stuffing. Poly fill.
Shroomok's choice on Amazon