Reddit mentions of Fermax Yeast Nutrient - 1 lb.

I did 5 pounds of peeled clementines put through a juicer (both juice and pulp added to must) 10 pounds of clover honey, 1/2 teaspoon of Wine Tannin 3/4 teaspoon of Fermax Yeast Nutrient and the sweet mead yeast. 45 days in primary, rack onto another 5 pounds of juiced clementines, 45 days secondary, campden tablet, and back sweetened.