# Tetra Test CO2 Aquarium Water Test Kit 2 x 10 ml

**URL:** https://aio.lv/en/product--tetra-tetra-test-co2-2-x-10-ml--1015156
**Data updated:** 2026-06-17 20:04 (EEST)
**Category:** Aquarium Supplies
**Manufacturer:** Tetra
**Manufacturer code:** Tetra Test CO2 2 x 10 ml
**EAN:** 4004218734258
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.99 €
**Prices and availability valid until:** 2026-08-02 23:59
**Price without VAT (21%):** 16.52 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--tetra-tetra-test-co2-2-x-10-ml--1015156

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

The Tetra Test CO2 is a reliable liquid test kit designed for accurate measurement of carbon dioxide levels in freshwater aquariums. Maintaining optimal CO2 concentration is essential for healthy plant growth and balanced water chemistry. This set includes two 10 ml reagent bottles, providing precise results to help aquarists monitor and adjust their CO2 supply effectively for a thriving aquatic environment.

## Long description

Tetra Test CO2 is a compact chemical test kit for measuring carbon dioxide (CO2) concentration in aquarium water. The set contains two 10 ml reagent bottles formulated for rapid, accurate on-site checks of dissolved CO2. Designed for hobby aquarists, the kit helps monitor gas levels that affect water chemistry, plant photosynthesis and overall aquarium stability.
Advantages
The reagents are pre-mixed and supplied in small, easy-to-handle 10 ml bottles for simple, repeatable measurements. The test delivers reliable and precise CO2 indications without the need for electronic sensors, making it suitable for routine checks and quick troubleshooting. Compact packaging is convenient for storage and occasional transport between tanks.
Suitable for
Freshwater planted aquariums where CO2 dosing is applied
Routine water chemistry monitoring to maintain stable conditions
Checking CO2 levels after dosing system adjustments or plant growth changes
Hobbyist use in home aquaria and small public display tanks
Key specifications
Test parameter: dissolved carbon dioxide (CO2)
Two reagent bottles, each 10 ml
Chemical titration-based colorimetric method
Designed for manual, visual readout
Suitable for freshwater aquarium water
How to use
Collect a sample of aquarium water following the instructions included with the kit. Add the specified number of drops of the reagent into the sample container and mix gently as directed. Compare the resulting color or endpoint with the reference scale provided to determine the CO2 concentration. Follow the kit’s handling and safety instructions for correct dosing of the reagents and disposal of used liquids.
Usage recommendations
Perform CO2 checks at regular intervals, especially after changing dosing rates or lighting periods. Record results to track trends and combine CO2 measurements with pH and KH data for a full picture of carbonate chemistry. Store reagents in a cool, dry place away from direct sunlight and keep tightly closed when not in use.

## Specifications

| Feature | Value |
|---|---|
| Volume | 0.01 L |
| Product type | Water test kit |
| Quantity per pack | 2 pc(s) |
| Measured parameters | Carbon dioxide (CO2) |
| Suitable for aquarium water | Yes |
| Suitable for freshwater aquarium | Yes |

## FAQ

### How much does the Tetra Test CO2 Aquarium Water Test Kit cost, and is it available for purchase?

The price is 19.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 21.07.2026 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 Tetra 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 Tetra 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

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