Mills - Ultimate PK Booster


A powerful heavy weight bloom booster for the last weeks of flowering. The superior composition of Ultimate PK will provide your plants with the boost they need for a grand finale. The formula will give your plants all the nutrients they require during ripening in order to achieve more abundant fruit set and hard cell structure. The magic performed by Ultimate PK stretches far beyond mere appearance, by also providing the best flavour and aroma.

  • Ripens, enlarges and hardens fruit
  • Enhances root health
  • Stengthens taste and aroma
  • Use in the last 2-4 weeks of the blooming stage.

If using C4,  discontinue its use when switching to Ultimate PK.

Compatible with all growing mediums and watering methods.



  • Phosphate (P2O5): 7.4 %
  • Potassium (K2O): 6.6 %
  • Boron (B): 0.0100 %
  • Copper (Cu): 0.0210 %
  • Iron (Fe): 0.0480 %
  • Manganese (Mn): 0.0160 %
  • Molybdenum (Mo): 0.0010 %
  • Zinc (Zn): 0.0080 %