RAW PhosphorusRAW Phosphorus Give plants the Phosphorus they need grab RAW Phosphorus. It contains 61% Phosphate (P) & 9% Ammonium Nitrogen (N) in a water soluble form. Use it to treat Phosphorus deficiencies, or customise your feed. Phosphorus is used mostly during early rooting, but also provides energy for fruit and flower production. 61% Phosphate (P), 9% Ammonium Nitrogen (N) Maximum control, custom feeds Safe to use throughout grow, even as foliar feed Safe