Product description
Canna PK 13/14 1 L – targeted PK supplement for the flowering phase
A litre of PK 13/14 makes sense once you run two tents side by side or bigger tanks of 100 L and up. You still only use it for a week per cycle, but you no longer have to ration the bottle.
What it does
Canna PK 13/14 delivers extra phosphorus and potassium (NPK 0-13-14) in a highly concentrated liquid. Plants need a lot of both when flowers start to fill out, and a short, well-timed dose supports bigger flower clusters and denser fruit. It works in soil, coco and hydro alongside your normal base nutrients.
How far 1 L goes
At the maximum dose of 1.5 ml/L, a litre treats roughly 665 L of nutrient solution. With a 100 L reservoir, one PK week needs 150 ml, so you get four or more cycles from a single bottle.
When to give it
The window is about seven days at 50–60% of the flowering time. For a plant that flowers 8 weeks, aim for week 5 to 6; for a 10-week plant, shift it to around week 6. Mix it into your regular feed rather than replacing anything.
After adding PK, measure the pH again, because potassium lowers it. Signs of calcium or magnesium deficiency mean you should cut back the dose next time.
- Contents: 1 L
- Nutrients: phosphorus (P), potassium (K)
- Dosage: max. 1.5 ml/L (15 ml per 10 L)


