# Test kit ZOOLEK ZOO AQUATEST CA-MG – calcium and magnesium aquarium water test (MPN 68415)

**URL:** https://aio.lv/en/product--zoolek-68415--12029284
**Data updated:** 2026-03-12 16:37 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** ZOOLEK
**Manufacturer code:** 68415
**EAN:** 5907527411409
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 17.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 14.87 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zoolek-68415--12029284

## 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 ZOO AQUATEST CA-MG is an aquarium water test kit for measuring calcium (Ca) and magnesium (Mg) concentrations. The kit provides reagents and instructions to assess water hardness components important for marine and reef aquaria, helping aquarists monitor and maintain stable mineral levels for coral and invertebrate health and for general water parameter control.

## Long description

ZOOLEK ZOO AQUATEST CA-MG is an aquarium water test kit designed to determine calcium (Ca) and magnesium (Mg) concentrations in aquarium water. The kit contains the reagents and instructions required to perform titration-based measurements that help aquarists evaluate two major contributors to total hardness and essential minerals for marine, reef and some freshwater systems. Accurate measurement of calcium and magnesium supports maintaining stable water chemistry for corals, invertebrates and organisms sensitive to mineral imbalance.
Advantages
The test kit offers a straightforward titration procedure with clear visual endpoints, enabling repeatable and comparable results. It is compact and supplied with calibrated reagents formulated for aquarium use, which reduces the need for additional laboratory equipment. Results allow informed adjustments to supplementation and water changes to maintain balanced Ca and Mg levels without guessing. The included instructions describe sample preparation and step-by-step measurement to ensure proper technique.
Suitable for
Marine and reef aquaria where corals and calcifying invertebrates require stable calcium levels
Home aquarists monitoring mineral balance in saltwater and mixed systems
Hobbyists checking water hardness components before dosing supplements or performing water changes
Key specifications
Measures calcium (Ca) concentration in aquarium water
Measures magnesium (Mg) concentration in aquarium water
Titration-based test method with visual endpoint
Includes reagents and user instructions for on-site measurements
Suitable for routine monitoring of mineral levels affecting total hardness
How to use
Collect a sample of aquarium water following the instructions provided with the kit, avoiding contamination from hands or equipment. Perform the titration steps in the order described, adding reagents dropwise and observing the colour change at the endpoint. Use the stated sample volumes and reagent volumes to calculate the concentrations of calcium and magnesium according to the kit’s calculation method. Rinse glassware between tests and dispose of used reagents according to local regulations.
Usage recommendations
Test regularly at intervals recommended for your aquarium type—more frequently after dosing supplements, water changes or when introducing new livestock. Record results to track trends over time and adjust dosing or maintenance routines to keep calcium and magnesium within target ranges appropriate for your corals, invertebrates or community.

## FAQ

### How much does the ZOOLEK ZOO AQUATEST CA-MG test kit cost, and is it available for purchase?

The price is 17.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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/12029284/67517089_large.webp