Features:
- Potassium is one of the elements that is mostly absorbed by freshwater plants.
- Even in the case of regular fertilization, the potassium value can go down to minimum levels, stopping plant growth.
- For a luxuriant growth of plants the value must be between 5 and 10mg / l; to reach 20mg / l in the case of intensely illuminated pools (more than 1W / l).
- Higher values of 20mg / l favor the growth of green filiform algae.