Fungi grow where light-weight falls and small penetration resistance prevails. Because light-weight also falls on the edges in the cake, fungi can grow there as well. This is certainly challenging to protect against. We often discourage darkening the edges of your grow box, as it's got far more damaging effects https://golden-teacher-growing-ki97531.blogdal.com/26896233/5-essential-elements-for-golden-teacher-mushroom-growing