---
product_id: 1780654
title: "API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit"
brand: "api"
price: "190 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/1780654-api-nitrate-90-test-freshwater-and-saltwater-aquarium-water-test
store_origin: DK
region: Denmark
---

# works in fresh & saltwater dual color cards for easy reading 90 precise nitrate tests API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit

**Brand:** api
**Price:** 190 kr
**Availability:** ✅ In Stock

## Summary

> 🧬 Keep your aquarium thriving—because your fish deserve the best!

## Quick Answers

- **What is this?** API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit by api
- **How much does it cost?** 190 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/1780654-api-nitrate-90-test-freshwater-and-saltwater-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

- • **Easy-to-Use Color Cards:** Instant visual results for quick, confident water quality checks.
- • **Comprehensive 90-Test Kit:** Long-lasting supply ensures consistent weekly monitoring.
- • **Accurate 0-160 ppm Detection:** Pinpoint nitrate levels to safeguard your aquatic ecosystem.
- • **Prevents Algae & Fish Stress:** Stay ahead of invisible water issues that threaten your fish’s health.
- • **Dual Environment Compatibility:** Perfectly calibrated for both freshwater and saltwater tanks.

## Overview

The NITRATE 90-Test Kit offers 90 precise tests to measure nitrate levels from 0 to 160 ppm in both freshwater and saltwater aquariums. Equipped with two bottles of testing solution, dual color cards, and a test tube with cap, it enables easy, weekly monitoring to prevent harmful nitrate buildup and algae growth, ensuring a healthy environment for your aquatic life.

## Description

Keep your fish healthy and thriving by testing your aquarium water's NO3 levels regularly with this easy-to-use API NITRATE TEST KIT for freshwater and saltwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. When left uncorrected, high nitrate in aquarium water can lead to a build-up of organic pollutants and poor fish health. Testing is fast, easy, and accurate. The API NITRATE TEST KIT for freshwater and saltwater aquariums tests for harmful nitrate levels from 0-160 ppm. This product comes with one nitrate bottle, one capped test tube, one instruction manual and one color card. The API NITRATE TEST KIT for freshwater and saltwater aquariums Test Kit can be used in freshwater and saltwater aquariums.   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 NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit, including 2 bottles of testing solution, 2 color cards and 1 test tube with cap
- Helps monitor and adjust nitrates and prevent invisible water problems that can be harmful to fish
- Detects high nitrate levels from 0-160 ppm
- Prevents algae growth that can be damaging to fish health
- Use for weekly monitoring and when water or fish problems appear

## Images

![API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit - Image 1](https://m.media-amazon.com/images/I/610ySfkzyHL.jpg)
![API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit - Image 2](https://m.media-amazon.com/images/I/912wxlaCtKL.jpg)
![API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit - Image 3](https://m.media-amazon.com/images/I/71VZ9LAOtoL.jpg)
![API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit - Image 4](https://m.media-amazon.com/images/I/81RL5ursEvL.jpg)
![API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit - Image 5](https://m.media-amazon.com/images/I/81NmHpeBddL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this test necessary and is it easy to use for a novice?  I received a 15 gallon as a present but I did not know it would be so much work and money.**
A: The test is easy to use; just remember to empty and rinse your vial after use, and rinse the vial with tank water (I dip some out with a small clean Dixie cup, then pour it into the vial and discard the water into the sink) before filling with water to do your test. And I examine the results under sunlight or a daylight spectrum fluorescent.If  you are doing regular water changes(weekly and/or as your water tests say to), and keeping the tank clean, you will not have to use this test often. Do not overfeed, and do not overload your tank (put too many fish or put too big of a fish in it). At the start you should have ammonia and nitrite test kits, and test daily to see what is going on while your filter cycles, then as a doublecheck for water quality. And yes it can take a month or so for your filter to cycle.Goldfish have a reputation for being a cheap fish, and easy to take care of... I breed and keep fancies; and honestly, 3 goldfish per 55 gallon aquarium!  A mature goldfish is about the size of an adult fist in body; and it is hard to keep water quality good for three that size in that size aquarium. In a 15 gallon no more than two small ones and they are going to grow and outgrow your tank. Half a dozen guppies or so will work, or a couple of mollies; or one betta.  Bettas need water about 85f, good quality, and at least a 10 gallon aquarium.

**Q: Hello I ordered this the 21st of April why is it taking so long to ship it ?**
A: Supply chains could be delayed due to Covid?

**Q: Does this include Nitrate Bottle #1 and Bottle #2?**
A: Ooops! Sorry. Yes it does include Bottle #1 and #2!

**Q: Putting 2.5ml & 5 drops of #1 & #2 each will get the same result? Will color continue to change after the 5 minute wait? Why cap leaks when I shake?**
A: Shake both bottles for one minute then add 10 drops of each to your test vial.  Then shake 30 seconds.   Any other questions should be directed to API. Not a consumer nor a seller

## Frequently Bought Together

- API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit
- API GH & KH TEST KIT Freshwater Aquarium Water Test Kit, 2.5 oz.

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-23*