hey! I have some organic potting soil...mostly coco coir. do I have to sterilze or can I just pasturize? also I have sheep manure compost....should I mix some of that in this substrate? its for the TA... View Morehey! I have some organic potting soil...mostly coco coir. do I have to sterilze or can I just pasturize? also I have sheep manure compost....should I mix some of that in this substrate? its for the TAMPANESIS