Is this white stuff normal or contamination? Shroomok: Totally normal and healthy Open full-size image [3024 x 4032 pixels] Shroomok's choice on Amazon BRF Jars Brown Rice Flour Mushroom Subst... Organic Whole Oat Grain Seeds (With Husk... Uniquely Greener Wheat Bran, 2 lb – Non-... Powerful Air Pump - for 20-200 Gallon -... Mushroom Bags,Mushroom Grow Bag Farm-Mus... Potato Flakes Digital salinity tester Smart Plug, Smart Home - 2 Pack this Synthetic Filter Discs - 16/30 Pieces Modular Stackable Storage Bins - 66 Quar... Activated Carbon (Activated Charcoal) Your comment Post comment