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Liquid for soaking and dabbing COGr strips .
CANNA has specially developed it to prepare the culture medium.

The COGr Buffer Agent to soak the bars in COGr substrate. The COGr fertilizer also contains pH stabilizers, silicon, humic acid and fulvic acid. COGr combined with COGr substrate bars is the fertilizer par excellence for the experienced and demanding grower.


Buffering solution with NPK (Ca,Mg) 6-0-0 (7-2.5). 5.9% Nitrogen (Ntotal) 0.0% N (NH4) 5.1% N (NO3) 0.9% N-urea 6.8% Calcium oxide (CaO) 2.4% Magnesium oxide (MgO) ) 0.0334% Iron (Fe) (DTPA)


  • Shake the bottle well before use
  • Fill the fertilizer tank with water
  • Add COGr VEGA in the proportion of 1:500 (200 ml per 100 liters of water) as follows to the nutrient tank
  • The EC of COGr BUFFER AGENT dissolved in water is then between 1.5 – 1.8 mS (= EC of the solution + EC of tap water)
  • Recommended pH: 5.2 – 6.2
  • Let the COGrs sit for at least 24 hours before letting them drain

Other indications

  • CANNA has specially developed another fertilizer for the growth phase of the plant: COGr Vega
  • CANNA has specially developed another fertilizer for the flowering phase of the plant: COGr Flores
  • Over-fertilization has a negative effect on the quality of the soil and the plant
  • Store away from frost, in a closed and dark place
  • Keep out of the reach of children

CANNA only works with high quality nutrients and chelates that are directly and fully absorbable by the plant.
The dosing bottle is made from 100% polyethylene (PVC, cadmium-free), a biodegradable synthetic material, which is also recyclable.

CAUTION H302 Harmful if swallowed. H319 Causes serious eye irritation. Dangerous. Respect the precautions for use.

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