---
product_id: 1780643
title: "API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz."
brand: "api"
price: "€ 3.90"
currency: EUR
in_stock: false
url: https://www.desertcart.be/products/1780643-api-gh-and-kh-test-kit-freshwater-aquarium-water-test
store_origin: BE
region: Belgium
---

# Accurate GH & KH measurement Includes 2 test bottles & tubes Quick weekly water quality check API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz.

**Brand:** api
**Price:** € 3.90
**Availability:** ❌ Out of Stock

## Summary

> 🐠 Keep your fish thriving with precision water testing — don’t let hidden water issues steal your aquatic zen!

## Quick Answers

- **What is this?** API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. by api
- **How much does it cost?** € 3.90 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/1780643-api-gh-and-kh-test-kit-freshwater-aquarium-water-test)

## Best For

- api enthusiasts

## Why This Product

- Trusted api brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Complete Testing Kit:** Two bottles of testing solution plus capped test tubes ensure hassle-free, mess-free water analysis every time.
- • **Trusted Brand Legacy:** Backed by nearly 60 years of API expertise, delivering proven, premium aquarium care solutions.
- • **Easy Weekly Monitoring:** Simple, fast tests designed for busy pros who demand reliable water quality insights on a schedule.
- • **Prevent Fish Stress & Loss:** Stay ahead of invisible water issues that cause pH swings and stress, keeping your aquatic friends thriving.
- • **Precision Water Hardness Testing:** Pinpoint your aquarium’s GH & KH levels with lab-grade accuracy to mimic natural habitats perfectly.

## Overview

The API GH & KH Test Kit is a professional-grade freshwater aquarium water testing solution that accurately measures general hardness (GH) and carbonate hardness (KH). It includes two bottles of testing solution and two capped test tubes, enabling easy, weekly monitoring to prevent harmful water conditions that stress fish and plants. Trusted by aquarists for nearly six decades, this compact 2.5 oz kit helps replicate natural habitats and maintain stable water chemistry for healthier, happier fish.

## Description

Keep your fish healthy and thriving by testing your aquarium water's GH levels regularly with this easy-to-use API GH & KH TEST KIT for freshwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Water hardness is a measure of the dissolved mineral content of water. There are two types: the general hardness (GH) and carbonate hardness (KH). When keeping freshwater fish and plants, the GH and the KH of aquarium water should match their natural habitat. The API GH & KH TEST KIT helps aquarists duplicate the natural habitat of their fish, as well as detect low KH levels, which can lead to rapid and wide pH shifts, stressing fish. API GH & KH TEST KIT contains KH test bottle, GH test bottle, instructions and two capped test tubes. With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

## Features

- Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution and 2 test tubes with cap
- Helps monitor water quality and prevent invisible water problems that can be harmful to fish and plants and cause fish loss
- Accurately measures GH & KH in freshwater aquariums
- Water hardness is a measure of the dissolved mineral content of water and should match fish natural habitat to prevent fish stress and keep them healthy
- Use for weekly monitoring and when water or fish problems appear

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003SNCHMA |
| ASIN  | B003SNCHMA |
| Best Sellers Rank | #3,500 in Pet Supplies ( See Top 100 in Pet Supplies ) #6 in Aquarium Test Kits |
| Brand Name | API |
| Color | DAA |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,927) |
| Date First Available | June 20, 2004 |
| Date First Available  | June 20, 2004 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | It is necessary to test the GH and KH to monitor water quality and prevent stressful conditions. |
| Item Dimensions LxWxH | 2.75 x 1.63 x 5.13 inches |
| Item Package Dimensions L x W x H | 5 x 2.83 x 1.73 inches |
| Item Weight | 2.5 ounces |
| Item model number | 58 |
| Item model number  | 58 |
| Manufacturer | Mars Fishcare |
| Manufacturer  | Mars Fishcare |
| Material | Plastic |
| Model Name | GENERAL/CARBONATE HARDNESS KIT |
| Number of Items | 2 |
| Product Dimensions  | 2.75 x 1.63 x 5.13 inches; 2.5 ounces |
| Size | 2.5 oz |
| Style | GH & KH |
| Target Audience Keyword | Fish |

## Images

![API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 1](https://m.media-amazon.com/images/I/518PHJWONXL.jpg)
![API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 2](https://m.media-amazon.com/images/I/91q9ER-WJFL.jpg)
![API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 3](https://m.media-amazon.com/images/I/51hXtDFPf0L.jpg)
![API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 4](https://m.media-amazon.com/images/I/71GkdCyCuBL.jpg)
![API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz. - Image 5](https://m.media-amazon.com/images/I/81T3-ZFwqBL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Frequently Bought Together

- API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz.
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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-14*