Just keep watching it and watch for bugs I don’t know anything about mushroom compost have u tried the organic section here?
Hello I noticed mine are getting small copper brown spots but not on all of it just mainly he fans? Anyone have this problem
There are a lot of different options that can provide some calcium to your mix. I would suggest going to your local plant store (if you have one) and looking specifically for something with calcium in it. The deficiency doesn't look very severe, so just use 10-40% of what they say a normal feeding is and you will avoid giving them nutrient burn in the process.