HESI PK 13/14

HESI PK 13/14

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What is HESI PK 13/14?

During the flowering period the need for phosphorus and potassium increases more and more. Flowering results in propagation, a large amount of genetic material (DNA) is built up and is accompanied by an increasing demand for energy. Both the energy molecules and the DNA strands contain a large amount of phosphate. Potassium is crucial for the transport of water and particles into the roots up to the leaves. It also regulates the uptake of carbon dioxide and influences the photosynthetic capacity.

PK 13/14 is a practical tool to gradually increase the PK content and avoid excessive amounts of PK in the early flowering phase, very important especially in hydroponic crops. 

Why choose it?

  • Use together with the bloom fertilizer. 
  • Improves the flowering performance 

How to use it?


  • Gradually increase the dosage starting in the second half of the flowering phase. 
  • For crops use only water one week before harvesting

Download the grow schedule for your substrate to know the exact amounts.

HESI Soil grow schedule
HESI Hydro grow schedule
HESI Coco grow schedule

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