Don't know that I remember hydra hume. Does it come in dry form in big brown bags? Seems like I might remember something like that.

 Black Label

6-20-0 0.77 Zn
Guaranteed Analysis
Total Nitrogen (N)…………………………………………….6.00%
5.00% Ammoniacal Nitrogen
0.30% Nitrate Nitrogen
0.70% Urea Nitrogen
Available Phosphate (P2O5)……………………………….20.00%
Zinc (Zn)………………………………………………………..0.77%
0.77% Water Soluble Zinc (Zn)
Derived From: Anhydrous Ammonia, Urea-Ammonium Nitrate
Solution, Phosphoric Acid and Zinc Sulfate
ALSO CONTAINS NON PLANT INGREDIENT:
7.1% Humic Acids derived from Leonardite Ore. F1548