# Liquid Test NO3 (Nitrate) for Aquariums ZOOLEK TEST NO3, brand ZOOLEK

**URL:** https://aio.lv/en/product--zoolek-24438--12022401
**Data updated:** 2026-03-11 20:57 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** ZOOLEK
**Manufacturer code:** 24438
**EAN:** 5907527410402
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 11.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zoolek-24438--12022401

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

ZOOLEK TEST NO3 is a liquid nitrate (NO3) test kit for aquarium water analysis by ZOOLEK. It is intended to detect and measure nitrate levels to monitor water quality for freshwater and marine tanks. The kit helps aquarists assess biological filtration and maintenance needs by providing qualitative or semi-quantitative nitrate readings to guide water changes and plant or livestock care.

## Long description

ZOOLEK TEST NO3 is a liquid nitrate (NO3) test kit designed for monitoring nitrate levels in aquarium water. The kit provides qualitative to semi-quantitative readings useful for assessing overall water quality in both freshwater and marine tanks. Regular measurement of nitrate helps aquarists evaluate biological filtration efficiency and schedule water changes or other maintenance actions to maintain a stable environment for plants and livestock.
Advantages
The liquid format enables straightforward dosing and mixing for test procedures, producing consistent reagent contact with the sample. The test kit is suitable for routine monitoring and gives clear visual results that can be interpreted quickly. It supports both freshwater and marine applications and helps identify when nitrate concentrations require corrective actions such as water changes or filtration adjustments.
Suitable for
 Routine water quality checks in freshwater aquariums
 Routine water quality checks in marine and reef tanks
 Assessing biological filtration performance
 Monitoring nitrate levels for planted aquaria and livestock health
 Guiding maintenance decisions such as water changes
Key specifications
 Analyte: Nitrate (NO3)
 Format: Liquid reagent test
 Application: Freshwater and marine aquarium water
 Output: Qualitative to semi-quantitative nitrate readings
 Intended use: Routine monitoring of nitrate concentration to inform maintenance
How to use
Collect the required volume of aquarium water according to the kit instructions and add the specified number of drops of reagent. Mix gently and allow the reaction time indicated in the supplied procedure. Compare the resulting color or indicator response to the reference scale provided with the kit to determine the nitrate level. Follow safety and handling instructions on the kit packaging, including rinsing measurement vessels and avoiding contamination between samples.
Usage recommendations
Perform nitrate tests at regular intervals, for example weekly or after significant changes such as stocking adjustments, feeding changes, or maintenance. Record results to track trends over time. If nitrate readings are consistently elevated, consider incremental water changes, evaluate feeding and stocking levels, and inspect biological filtration. Store reagents according to the manufacturer’s storage instructions and replace reagents before their expiration to ensure accurate results.

## FAQ

### How much does the ZOOLEK TEST NO3 liquid nitrate test cost, and is it available for purchase?

The price is 13.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 06.07.2026 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 ZOOLEK 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 ZOOLEK 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/12022401/67510720_large.webp