Let me double check that I understand: only 90mg of copper per 5 lbs of hay can be ingested? Meaning if my Cu is 20mg/5 lbs of hay, then the max I can add is 70mg/5 lbs. If I feed 17 lbs of hay then the most Cu I can add is 17 lbs fed hay/5 lbs hay x 70 mg/5 lbs = 238 mg Cu? The hay is not any dustier the most hays I've ever had. They are both teff, w/ similar high iron: 278ppm & 262 ppm. Grown about 30 miles apart, by different farmers using different equipment.
