[General] Help with a few problems

Hello I could really use some help from this lovely communityCan someone please help me with a guide to sterilizing spent syringes and grain jars?What is the best adhesive to use while applying micropore filters to grain jars?How much Gypsum should you add to a coir bulkBest spawn mix / bulk sub for oyster mushrooms? I have heard spent coffee grounds for spawn but if anyone has a good recipe they would like to share i would love any help i can get, thanks! via /r/MushroomGrowers https://ift.tt/2LOZkeK