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

**URL:** https://aio.lv/en/product--femanga-fm-12202--12073331
**Data updated:** 2026-03-12 21:52 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** FEMANGA
**Manufacturer code:** FM-12202
**EAN:** 4024713111903
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--femanga-fm-12202--12073331

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

FEMANGA oak root extract (500 ml, model FM-12202) is a liquid preparation intended for natural reduction of pH in freshwater aquaria. Made from oak root extract, it gradually acidifies water and can help simulate soft, tannin-rich biotope conditions for sensitive fish and shrimp. Use cases include stabilizing pH for biotope setups, reducing alkalinity slightly, and supporting plant and invertebrate health. Dosage and contact time should follow manufacturer guidance.

## Long description

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.

## FAQ

### How much does the FEMANGA oak root extract FM-12202, 500 ml cost, and is it available for purchase?

The price is 14.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 20.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All FEMANGA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized FEMANGA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12073331/68542950_large.webp