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Mills Ultimate PK Liter

Mills Ultimate PK Liter


Ultimate PK is a unique Phosphite based bloom additive formulated for the last weeks of flower development. Phosphite is an extremely bioavailable form of Phosphate that promotes robust root systems and helps ensure proper nutrient intake and plant growth late in the bloom cycle. Ultimate PK is specially designed to act as a hardener, bulker, and ripener to push your production to the limit.

Ultimate PK is responsible for:

  • Larger and harder fruit and flowers with the best possible aroma and flavor
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