MasterLine Pottasium Fertilizer - 500ml

MasterLine Potassium Fertiliser – Essential K Source for Healthy Plant Development

MasterLine Potassium is a concentrated liquid fertiliser providing the third most important macronutrient—potassium (K). This element activates vital plant enzymes responsible for nutrient absorption, photosynthesis, and strong cellular structure. Deficiency in potassium often leads to yellowing or deterioration of older leaves and slower plant growth.

By dosing MasterLine Potassium when levels fall below 15 ppm, aquascapers can maintain optimal nutrient balance and prevent deficiencies. The formula can be used alongside other MasterLine individual element fertilisers for precise control, or as a supplement to the All-in-One range.

Specifications

Ingredients / Composition

• Potassium (K) – 3%
• Purified water and stabilising agents

How to Use This Fertiliser

1. Shake the bottle well before use.
2. Measure potassium levels with a reliable test kit.
3. Dose MasterLine Potassium when K levels drop below 15 ppm.
4. Use together with MasterLine Nitrate and MasterLine Phosphate for complete nutrient control.
5. Perform weekly water changes to maintain equilibrium.

Care & Maintenance Tips

• Do not overdose – maintain potassium levels between 10–20 ppm.
• Store away from heat, frost, and sunlight.
• Use clean dosing equipment to avoid contamination.
• Keep out of reach of children and pets.
• For aquarium use only.