# Water Test Kit sera Aqua-test set SE-04000 — aquarium and pond water parameter tests

**URL:** https://aio.lv/en/product--sera-se-04000--12270475
**Data updated:** 2026-04-16 16:29 (EEST)
**Category:** Other goods
**Manufacturer:** sera
**Manufacturer code:** SE-04000
**EAN:** 4001942040006
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-11-02 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sera-se-04000--12270475

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.10.2026 | free |
| Pickup points | 22.10.2026 | 1.99 EUR |
| Courier delivery to door | 22.10.2026 | 4.99 EUR |

## Summary description

sera Aqua-test set SE-04000 is a water test kit for measuring key aquarium and pond water parameters. The set provides chemical tests designed to assess water quality for fish and aquatic plants, helping hobbyists monitor conditions, detect imbalances and plan corrective actions. Suitable for routine checks and maintenance of freshwater systems.

## Long description

sera Aqua-test set SE-04000 is a compact water test kit designed for routine monitoring of aquarium and pond water quality. The set measures essential parameters for freshwater and marine systems including pH, carbonate hardness (KH), total hardness (GH) and nitrite (NO2). Each test is supplied with detailed instructions to help hobbyists and professionals evaluate water chemistry, detect imbalances and plan corrective steps to protect fish and aquatic plants.
Advantages
The sera Aqua-test set offers a group of chemical tests that cover the most commonly monitored water parameters, enabling regular checks with a single kit. Test procedures are standardized and documented, which helps ensure repeatable results when used according to the included instructions. The set is suitable for both freshwater and marine environments and supports early detection of nitrite spikes and hardness-related issues that affect fish health and plant growth.
Suitable for
 Routine monitoring of aquarium and garden pond water quality
 Checking pH value to maintain stable water chemistry
 Measuring carbonate hardness (KH) and total hardness (GH) for water conditioning and buffering needs
 Detecting nitrite (NO2) presence during cycling or after biological disturbances
 Hobbyists, breeders and small public displays requiring periodic water tests
When it may not be suitable
This set does not provide measurements for ammonia, nitrate, phosphate, dissolved oxygen or trace metals; if those parameters are required, additional specific tests are necessary. For high-precision laboratory analysis or large-scale water systems where continuous monitoring is needed, professional instrumentation or automated probes would be more appropriate.
Key specifications
 Measured parameters: pH, carbonate hardness (KH), total hardness (GH), nitrite (NO2)
 Intended use: aquarium and pond water testing (freshwater and marine compatibility)
 Test type: chemical reagent-based colorimetric tests
 Includes: individual reagent sets and detailed instructions for each test
 Results: visual color comparison to reference chart provided with kit
How to use
Follow the detailed instructions included with each reagent set. Typically, collect a water sample in the provided test vial or a clean container, add the specified number of reagent drops or tablets, mix as directed and compare the resulting color against the kit’s reference chart at the recommended reaction time. Rinse test vials thoroughly between tests and store reagents according to the manufacturer’s guidelines to preserve accuracy. Record results to track trends over time.
What to consider before purchase
 Confirm that the kit measures the specific parameters you need (pH, KH, GH, NO2)
 Consider test frequency and amount of reagent supply if you perform frequent monitoring
 Ensure you have adequate lighting and the provided color chart is suitable for your environment to interpret results accurately
 Note that additional tests may be required for ammonia, nitrate, phosphate or other specific water chemistry concerns
Usage recommendations
Perform tests on a regular schedule (for example weekly during establishment and after maintenance, then monthly for stable systems). Use fresh reagents, follow the timed reaction steps carefully and compare colors under consistent lighting. Keep a log of values to detect gradual trends and take corrective actions when parameters deviate from the recommended ranges for your species.

## Specifications

| Feature | Value |
|---|---|
| Country of origin | Germany |
| Package type | Box |
| Product type | Water test kit |
| Measured parameters | Carbonate hardness (KH), General hardness (GH), Nitrogen dioxide (NO2), pH |
| Suitable for pond water | Yes |
| Suitable for aquarium water | Yes |
| Suitable for freshwater aquarium | Yes |
| Suitable for marine aquarium | Yes |

## FAQ

### How much does the sera Aqua-test set SE-04000 water test kit cost, and is it available for purchase?

The price is 29.49 € (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 19.10.2026 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 sera 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 sera 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/12270475/68193406_large.webp