Mills Ultimate PK



Mills Ultimate PK booster is a deep clean for your plants root zone. It’s a hardener, bulker, ripener and is a very clean and super soluble mineral salts additive.  This ‘big finish’ for your plants is specifically designed for use in the last 2 to 4 weeks of  the bloom phase.  Ultimate PK booster has been extensively tried and tested, so it gives your plants that extra boost during ripening, producing larger, heavier fruits with an increased aroma and flavour. 


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 % 

See the DNA Mills feed chart for recommended usage.

Keep this product at room temperature. Do not allow it to freeze.


Full Product Description

Mills Ultimate PK booster is available in the following bottle sizes –

  • 250ml
  • 1 L
  • 5 L

Benefits of using Ultimate PK  from Mills –

  • Larger and harder fruits and flowers
  • Hard cell structure
  • Heightened aroma and flavour