Seachem Flourish Potassium Potassium is one of the most important macronutrients for healthy aquatic plant growth, and Seachem Flourish Potassium delivers it in a safe, bioavailable form that your plants can easily absorb. Potassium deficiencies are common in planted tanks and often show up as pinholes or yellowing in older leaves. This specialised supplement ensures your aquascape stays lush, vibrant, and free of nutrient imbalances. Unlike general fertilisers, Flourish Potassium provides a concentrated source of potassium without added nitrogen or phosphorus, making it ideal for aquariums with high fish load or specific fertilisation routines. Regular dosing prevents deficiencies and supports strong root development, robust stems, and rich green foliage. Corrects and prevents potassium deficiency Supports healthy leaf structure and vibrant growth Safe for all fish, shrimp, and invertebrates Ideal for custom fertilization plans How to use Use 1 capful (5 mL) for every 125 L (30 US gallons). This dose raises potassium by 2 mg/L. Repeat 2–3 times per week or as needed in response to signs of potassium deficiency in older leaves which include: chlorosis (yellowing), necrosis (death/browning), pinholes in leaves, and weak stems and roots. Directions: Dose as recommended or adjust based on plant density and growth rate. Best used with a complete fertilisation regimen for optimal results. Available Bottle Sizes: 50ml 100ml 250ml 500ml
