Consult the complete User Guide 17 December 2021 14:53 Updated Click here to see the complete User Guide Related articles Consult the complete Fertilizer Guide When Will my Tero be Delivered? The seal falls off the lid. What Should I do? I Can’t Connect the Mobile App to My Tero Plus Device. What Should I Do? How Can I Connect the Tero Mobile App to My Tero Plus Device?