Field Marshall Critical Mass

Field Marshall Critical Mass is a high-powered PK additive designed to supercharge mid to late flowering performance. Perfect for use in hydroponic, coco, and soil systems, it delivers the optimal balance of phosphorus (P) and potassium (K) your plants crave for dense, high-quality yields.

What It Does

Critical Mass fuels plants through their most demanding flowering stage by boosting sugar production, energy transfer, and nutrient movement — all essential for developing big, aromatic blooms and heavy fruit set.

• Phosphorus (P): Supports photosynthesis, cell division, energy transfer, and genetic stability. It’s the backbone of how plants convert light into usable energy.
• Potassium (K): Drives sugar and starch production, enhances disease resistance, and strengthens flower density for weightier, more resinous yields.

As your plants mature, potassium needs increase while phosphorus demand stabilises. Critical Mass delivers the perfect ratio to match this natural progression, ensuring optimal flower development and crop quality.

How to Use

Soil & Pot Mixes

• Use from week 4 (day 22) of flowering until maturity.
• Dilute at 0.5ml – 1.0ml per litre of nutrient solution.
• For heavy fruit ripening before flush: increase to 1.5ml/L.

Coco & Hydro Systems

• Follow the same schedule at, or up to, double strength for high-demand crops.
• Maximum dosage: 2ml/L mid-flower or 3ml/L ripening.
• Reduce base nutrients by at least 20% to avoid burn when using double strength.

For a clean, flavour-packed finish, flush with FM Clean Cut and water for 3–7 days before harvest.

Key Benefits

• Enhances flower size, density, and sugar content
• Improves nutrient uptake and energy transfer
• Boosts disease and mould resistance
• Optimised P:K ratio for late bloom performance
• Compatible with all growing media and systems