Mills Ultimate PK – Premium Phosphorus & Potassium Booster for Exceptional Flowering Mills Ultimate PK is a high-performance flowering booster designed to maximise flower development, improve plant strength and deliver heavier, higher-quality harvests. With a carefully balanced blend of phosphorus (P) and potassium (K), Ultimate PK provides plants with the essential nutrients they need during the peak flowering phase. Developed to work seamlessly with the Mills Nutrients feeding programme, Ultimate PK promotes larger, denser blooms, supports increased resin production and helps plants make the most of their genetic potential. Its highly available formula is easily absorbed, ensuring your plants receive the nutrients they need when they need them most. Suitable for use in soil, coco and hydroponic systems, Mills Ultimate PK is ideal for growers looking to achieve consistent, professional-quality results. Key Benefits: Boosts flower size, density and overall yield Delivers an optimal blend of phosphorus and potassium Supports strong, healthy flowering plants Encourages improved resin and essential oil production Fast nutrient uptake for maximum effectiveness Suitable for soil, coco and hydroponic growing Perfectly complements the Mills Nutrients range Push your plants to their full potential with Mills Ultimate PK – the trusted flowering booster for bigger blooms, improved quality and outstanding harvests. Use Ultimate PK from week 5 of the flowering phase, starting with 2 ml per litre of water, increasing to 2.5 ml per litre from week 7 of flowering