Potassium Sulfate (K2SO4) is a source of Potassium (K) necessary for protein synthesis and Iron (Fe) metabolization.
Sulfur (S) is essential for root development.
Add 1.65 grams into 100L tank twice per week with 30-50% weekly water change.
*Amounts above are for reference only. Your planted aquarium may need more or less depending on many factors
- 1.67 grams into 100L will yield
- 7.50ppm K
- 3.08ppm S
Potassium deficiency can be one of the most depressing problems in a planted tank. Water doesn’t usually contain it that much, so additional supplement is often required. Usually water doesn’t contain potassium more than 2 parts per million (ppm). Hobbyist often uses Potassium Sulfate aka K2SO4 to their aquarium to supplement potassium. The ideal potassium level in a planted tank should be between 10 to 50 ppm. Weekly 20 ppm of potassium for high light tank and 10 ppm of potassium for low light tank should be added.
Symptoms of Potassium deficiency:
=>small necroses are visible on the older leaves of the plant. They start as a small black spot on the leaves. But eventually they get bigger and often have a yellowish border around them.
=>New leaves become smaller in size and surface.
=>the older leaves may become yellow even before they die. The veins can turn to yellow too.
=>The edges of the leaves turn yellowish.
=> Brown dots can be visible on the leaves.
Dosage rate for 100L Tank
Low Light Tank 2 gram once per week - 50% weekly water change approx
Medium Light Tank 4 gram twice per week - 50% weekly water change
High Light Tank 6 gram three times per week - 50% weekly water change