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  • Highly-concentrated Phosphorus and Potassium boosting supplement.
  • Designed to be used throughout the flowering stage of any fruit or flower-producing plants.
  • Also contains chelated Manganese and chelated Zinc.
  • Dilution: 1-3 mL (0.03-0.10 fl. oz) per 4 L (1 gallon) of water through Weeks 1-8 of any fruit or flower producing plants.
  • Available in 1 Quart, 1 Gallon, 2.5 Gallon, 5 Gallon, 55 Gallon, & 330 Gallon sizes.

Engineered as a potent PK Booster, Flex stands as a powerhouse enriched with readily absorbable Phosphorus and Potassium, catering to the heightened demands of plants during the flowering phase. This meticulously crafted formula delivers a surge of Phosphorous and Potassium essential for a myriad of biological processes, ranging from metabolic functions to nutrient transport mechanisms. By bolstering Phosphorus and Potassium levels, Flex fosters the synthesis of complex essential oils, sugars, and terpenes, pivotal for enhancing overall plant vitality and productivity.

In addition to its Phosphorus and Potassium content, Flex incorporates chelated Manganese and Zinc, further enriching its nutritional profile. Manganese serves as a linchpin in various biological systems, including photosynthesis, respiration, and root development, while also fortifying plants against root pathogens. Meanwhile, Zinc plays a crucial role in enzyme activation, driving metabolic reactions vital for carbohydrate, protein, and chlorophyll synthesis.

Formulated with a robust N-P-K ratio of 0-10-10, Flex amplifies root growth, flower initiation, and fruiting, while bolstering cellular energy transport and structural integrity. The elevated Phosphorous concentration stimulates root and flower development, while Potassium enhances overall plant vigor and resilience against diseases. This strategic blend of nutrients is derived from premium sources, including Monopotassium Phosphate and Dipotassium Phosphate, ensuring optimal nutrient uptake without resorting to common, less effective alternatives like Potassium Chloride.

Experience accelerated growth and abundant flowering with Flex, facilitating denser, harder, and heavier fruits and flowers, ultimately resulting in heightened yields. An all-in-one hardener and bulker. Flex on ‘em.

Maximize your plants’ genetic potential for growth and production in any growing medium. 

The terps are back.

Normal or Heavy feed?

Feed your plants what they require & desire with our Feeding Schedules.

Additional information

Guaranteed Analysis

Available Phosphate (P2O5) . . . . . . . . . 10.0%
Soluble Potash (K2O) . . . . . . . . . . . . 10.0%
Manganese (Mn) . . . . . . . . . . . . . . . 0.05%
0.05% Chelated Manganese (Mn)
Zinc (Zn) . . . . . . . . . . . . . . . . . . . 0.05%
0.05% Chelated Zinc (Zn)

Derived From

Monopotassium Phosphate, Dipotassium Phosphate, Manganese EDTA, Zinc EDTA


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