Flourish Potassium 100ml

Flourish Potassium is a liquid potassium supplement for aquarists whose heavily planted tanks show potassium shortage or whose water contains few mineral nutrients. Potassium is the limiting factor for plant growth in these setups, so dosing it directly addresses the cause rather than the symptoms.

Why it matters

• The product is derived from potassium sulfate, so it does not add nitrogen or phosphorus to the water, which keeps the N:P:K ratio under control.
• A single 5 ml cap per 125 L raises potassium by 2 mg/L, which allows precise dosing based on tank volume.
• It is intended to prevent potassium deficiency, whose visible signs include yellowing leaves, chlorosis and leaf necrosis.
• Regular use supports stronger shoots and root systems and faster plant growth, according to the manufacturer.

Specifications

• Brand: Seachem
• Model: Seachem Flourish Potas 100
• Package volume: 100 ml
• Dose: 5 ml (one cap) per 125 L of aquarium volume
• Potassium source: potassium sulfate
• Soluble potassium as K2O: 5.8%
• Free potassium content: 50,000 ppm (5%)
• Recommended frequency: 2–3 times per week, or as needed

What it works with

The product is aimed at planted freshwater aquariums, where it is dosed according to total water volume, using the 5 ml per 125 L rate. Because it is a sulfate-based liquid, it can be used in tanks where nitrate and phosphate levels must be kept low. Dosing should be adjusted to the actual water volume and the plant load of each tank.