---
product_id: 47963393
title: "GH & KH TEST KIT Freshwater Aquarium Water Test Kit 1-Count"
brand: "api"
price: "€ 34.55"
currency: EUR
in_stock: true
reviews_count: 13
category: "Api"
url: https://www.desertcart.com.cy/products/47963393-gh-and-kh-test-kit-freshwater-aquarium-water-test-kit
store_origin: CY
region: Cyprus
---

# Accurate GH & KH freshwater readings 160+ precise tests per kit Results in under 5 minutes GH & KH TEST KIT Freshwater Aquarium Water Test Kit 1-Count

**Brand:** api
**Price:** € 34.55
**Availability:** ✅ In Stock

## Summary

> 🧬 Master your aquarium’s chemistry like a pro—because your fish deserve the best!

## Quick Answers

- **What is this?** GH & KH TEST KIT Freshwater Aquarium Water Test Kit 1-Count by api
- **How much does it cost?** € 34.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/47963393-gh-and-kh-test-kit-freshwater-aquarium-water-test-kit)

## 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

- • **Stress-Free Fish Care:** Maintain ideal mineral balance to prevent fish stress and boost aquatic vitality.
- • **Fast-Track Water Health:** Get reliable GH & KH results in under 5 minutes—no guesswork, no delay.
- • **Precision Testing Powerhouse:** Over 160 tests per kit to keep your aquarium chemistry flawless.
- • **User-Friendly & Comprehensive:** Includes color card, test tubes with caps, and easy-to-follow instructions for weekly monitoring.
- • **Tailored for Freshwater Enthusiasts:** Specifically designed to measure water hardness and alkalinity for freshwater tanks.

## Overview

The API GH & KH Test Kit is a professional-grade freshwater aquarium water test kit that accurately measures general hardness (GH) and carbonate hardness (KH) to ensure optimal water conditions. With over 160 tests per kit, quick 5-minute results, and a clear color chart, it empowers aquarium managers to maintain mineral balance, reduce fish stress, and prevent water-related health issues. Ideal for weekly monitoring and troubleshooting, this kit is a must-have for serious freshwater fishkeepers.

## Description

Accurately monitor water hardness and alkalinity to prevent invisible issues and keep fish healthy. Easy-to-use test kit for weekly water quality checks.

Review: As easy as it gets... - This API Nitrite test kit is for testing fresh water or salt water for levels of nitrite. Used mainly for aquariums as nitrite, if present in water, can be harmful to fish. The test kit is very easy to use. You just fill up the test tube that is provided, to 5ml. There is a marking on the test tube so you know when it has reached 5ml. You then add 5 drops of the solution provided, put the lid on the tube, then shake it for 5 seconds. Wait for 5 minutes, then compare the colour of the water to the colours on the test card. It is that simple. Depending on the colour, the instructions can give you some advice on what to do, which is very helpful. They go into decent detail to explain some things, the headings are.... 1 - Why test for nitrite? 2 - Testing tips 3 - Directions (step by step guide on how to test water using the kit) 4 - What the test results mean 5 - Reducing aquarium nitrite levels 6 - Reducing pond nitrite levels These are written in English, then translated into French, Spanish, Italian, Portuguese, German, Dutch and Swedish. The test kit includes 1 - Nitrite test solution (with childproof safety cap) 2 - Test tube with lid 3 - Instructions 4 - Nitrite colour card The test can be done up to 180 times with the solution provided. The colour card has six different colours. The ranges are 0 ppm, 0,25 ppm, 0.50 ppm, 1.0 ppm, 2.0 ppm and 5.0 ppm. You can see the colour card in the picture that I added above. It also has a step by step picture guide on how to test your water. I mainly purchased this for when I was cycling my fish tank. Once the ammonia started to go down, the nitrite level was rising. I had to keep an eye on this level so I knew when to do water changes so my fish didn't become too sick. My fish tank successfully cycled, but it is also useful to check water levels after cycling. I normally test for nitrite 2 days after the weekly water change when all levels are settled. I believe that test results can be distorted if you test too soon after a water change because of the reaction in the water when you add dechlorinator. My nitrite has stayed at 0ppm but it puts my mind at rest to know for sure. All in all, this test kit has been very helpful to me, especially during the stages when I was just beginning my fish hobby.
Review: Accurate pH readings for hardwater tanks—easy to use, no faff, and results are clear as day. - Been using this for my Rift Lake cichlid setup where high pH is the norm—this kit reads up to 8.8, so it’s ideal. Comes with the test solution, vial, and colour chart. Just fill the vial, add drops, shake, and match the colour. Takes less than a minute and results are easy to read. I’ve tested it against digital meters and it’s bang on. No clouding, no dodgy readings. Works well in both freshwater and marine tanks. I use it weekly and during water changes to make sure things stay stable. The kit lasts ages—160 tests is no joke. Bottle seals tight, and the chart’s printed clearly. No guesswork, no drama. 👍 Pros ✅ Reads high pH—ideal for Rift Lake and marine setups ✅ Quick results—under a minute ✅ Clear colour chart—easy to match ✅ Reliable—matches digital meter readings ✅ Long-lasting—160 tests per kit 👎 Cons ❌ Manual process—needs vial and drops ❌ No digital readout—just colour matching ❌ Can stain if spilled—wipe up quick ❌ Doesn’t cover low pH ranges 🧭 Personal Review If you’re running a high pH tank and want reliable readings without the faff, this API kit earns its spot. I’ve used it across cichlid builds and marine setups—no drama, just clean results and peace of mind. Proper stash-ready gear for anyone who takes water chemistry seriously.

## Features

- Causes serious eye damage.
- Causes severe skin burns and eye damage.
- Causes skin irritation.
- May cause an allergic skin reaction.
- May cause damage to organs through prolonged or repeated exposure.
- May cause respiratory irritation.
- Suspected of causing cancer.
- Contains one (1) API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, including 2 bottles of testing solution, 1 colour card and 2 glass 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 |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 1,344 in Pet Supplies ( See Top 100 in Pet Supplies ) 5 in Aquarium Test Kits |
| Customer Reviews | 4.6 4.6 out of 5 stars (19,258) |
| Date First Available | 8 Aug. 2009 |
| Item Weight | 70.8 g |
| Item model number | 58 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 6.99 x 4.13 x 13.02 cm; 70.87 g |
| Quantity | 1 |
| Size | 1 Count (Pack of 1) |
| Volume | 1.25 |

## Images

![GH & KH TEST KIT Freshwater Aquarium Water Test Kit 1-Count - Image 1](https://m.media-amazon.com/images/I/518PHJWONXL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ As easy as it gets...
*by R***V on 2 December 2011*

This API Nitrite test kit is for testing fresh water or salt water for levels of nitrite. Used mainly for aquariums as nitrite, if present in water, can be harmful to fish. The test kit is very easy to use. You just fill up the test tube that is provided, to 5ml. There is a marking on the test tube so you know when it has reached 5ml. You then add 5 drops of the solution provided, put the lid on the tube, then shake it for 5 seconds. Wait for 5 minutes, then compare the colour of the water to the colours on the test card. It is that simple. Depending on the colour, the instructions can give you some advice on what to do, which is very helpful. They go into decent detail to explain some things, the headings are.... 1 - Why test for nitrite? 2 - Testing tips 3 - Directions (step by step guide on how to test water using the kit) 4 - What the test results mean 5 - Reducing aquarium nitrite levels 6 - Reducing pond nitrite levels These are written in English, then translated into French, Spanish, Italian, Portuguese, German, Dutch and Swedish. The test kit includes 1 - Nitrite test solution (with childproof safety cap) 2 - Test tube with lid 3 - Instructions 4 - Nitrite colour card The test can be done up to 180 times with the solution provided. The colour card has six different colours. The ranges are 0 ppm, 0,25 ppm, 0.50 ppm, 1.0 ppm, 2.0 ppm and 5.0 ppm. You can see the colour card in the picture that I added above. It also has a step by step picture guide on how to test your water. I mainly purchased this for when I was cycling my fish tank. Once the ammonia started to go down, the nitrite level was rising. I had to keep an eye on this level so I knew when to do water changes so my fish didn't become too sick. My fish tank successfully cycled, but it is also useful to check water levels after cycling. I normally test for nitrite 2 days after the weekly water change when all levels are settled. I believe that test results can be distorted if you test too soon after a water change because of the reaction in the water when you add dechlorinator. My nitrite has stayed at 0ppm but it puts my mind at rest to know for sure. All in all, this test kit has been very helpful to me, especially during the stages when I was just beginning my fish hobby.

### ⭐⭐⭐⭐⭐ Accurate pH readings for hardwater tanks—easy to use, no faff, and results are clear as day.
*by G***E on 21 September 2025*

Been using this for my Rift Lake cichlid setup where high pH is the norm—this kit reads up to 8.8, so it’s ideal. Comes with the test solution, vial, and colour chart. Just fill the vial, add drops, shake, and match the colour. Takes less than a minute and results are easy to read. I’ve tested it against digital meters and it’s bang on. No clouding, no dodgy readings. Works well in both freshwater and marine tanks. I use it weekly and during water changes to make sure things stay stable. The kit lasts ages—160 tests is no joke. Bottle seals tight, and the chart’s printed clearly. No guesswork, no drama. 👍 Pros ✅ Reads high pH—ideal for Rift Lake and marine setups ✅ Quick results—under a minute ✅ Clear colour chart—easy to match ✅ Reliable—matches digital meter readings ✅ Long-lasting—160 tests per kit 👎 Cons ❌ Manual process—needs vial and drops ❌ No digital readout—just colour matching ❌ Can stain if spilled—wipe up quick ❌ Doesn’t cover low pH ranges 🧭 Personal Review If you’re running a high pH tank and want reliable readings without the faff, this API kit earns its spot. I’ve used it across cichlid builds and marine setups—no drama, just clean results and peace of mind. Proper stash-ready gear for anyone who takes water chemistry seriously.

### ⭐⭐⭐⭐⭐ Straightforward
*by I***E on 17 September 2025*

As others have mentioned, initially the dropper bottle will drip quickly when turned upside down, so a little care is needed, and it will do it less after a few drops have been used. Otherwise straightforward to use.

## Frequently Bought Together

- API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz.
- API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored
- SaltyShrimp Shrimp Mineral GH/KH+ 100g

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-03*