FEMANGA aquarium oak root extract FM-12202, natural pH-lowering preparation, 500 ml

FEMANGA aquarium oak root extract FM-12202 (500 ml) is a liquid preparation formulated to lower and gently stabilize pH in freshwater aquaria by introducing natural tannins and organic acids. Derived from oak root, the solution slowly acidifies aquarium water to reproduce soft, tannin-rich biotope conditions commonly found in blackwater rivers and streams. It is intended for gradual adjustment rather than rapid chemical shocks, and is suitable for aquarists seeking a natural method to influence water chemistry for sensitive fish, shrimp and plants.

Advantages

The oak root extract provides a gradual, controlled reduction of pH through naturally occurring tannins and organic compounds, minimizing sudden fluctuations. As a liquid preparation, it disperses quickly and is easy to dose, supporting consistent water conditions. The product can impart mild tannin coloration which mimics biotope environments and may have beneficial effects on some species' behaviour and wellbeing without introducing synthetic acids or harsh chemicals.

Suitable for

• Soft-water biotope setups (blackwater, peat-stained environments)
• Aquariums with sensitive fish species that prefer slightly acidic water
• Shrimp tanks requiring stable, low-pH conditions
• Planted tanks where mild acidification supports nutrient availability

Key specifications

• Form: liquid concentrate, ready to dilute according to dosing instructions
• Volume: 500 ml bottle
• Active components: natural oak root extract containing tannins and organic acids
• Effect: gradual pH lowering and mild water darkening (tannin coloration)
• Intended water type: freshwater aquaria

How to use

Add the oak root extract to aquarium water following the manufacturer’s dosing guidance to achieve gradual acidification. Dose incrementally and monitor pH and water parameters between applications. Aim for slow changes over days rather than large, immediate adjustments; perform partial water changes as needed to control tannin concentration and overall water chemistry. Use a reliable test kit to confirm target pH and stability before introducing or changing sensitive livestock.

Usage recommendations

Start with small, measured doses and test pH regularly. When converting a new setup to softer, tannin-rich conditions, allow several days to observe changes and adapt dosing. Combine with regular water quality monitoring and standard aquarium maintenance. Avoid using in systems that require neutral to high pH without careful control.