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API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit

4.7 4.7 out of 5 stars 1,354 ratings

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180 tests

Purchase options and add-ons

  • Contains one (1) API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit, including 1 bottle of testing solution, 1 color card and 1 test tube with cap
  • Helps monitor nitrite and prevent invisible water problems that can be harmful to fish
  • Accurately detects high nitrate levels from 0-5 ppm
  • Prevents high levels of nitrite which inhibit fish respiration and suppress their immune systems
  • Use for weekly monitoring and when water or fish problems appear

Customer ratings by feature

Easy to read
4.6 4.6
Easy to use
4.6 4.6
Accuracy
4.4 4.4

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From the manufacturer

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test

Testing the Waters

In order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even loss. Most common water quality parameters are Ammonia, Nitrite, Nitrate, and pH. All may vary over time and all are invisible to the eye which is why it is important to test weekly. Testing aquarium water weekly will aid in keeping your most important water parameters within the proper range for your aquarium. Choose from a wide range of API testing options, such as our popular FRESHWATER MASTER TEST KIT or 5-IN-1 TEST STRIPS, for accurate water evaluation. Regular testing will help you easily determine your aquarium conditions.

Find Your Ideal Testing Style!

Test

Test

Test

Test

Your API Test Options

Choose the test method that works best for you. Whether you’re a bit pressed for time, or you prefer to measure your parameters on a more in-depth scale, or you only need to test one or two specific parameters, API has what you need!

Dip and Read

Just dip a 5-in-1 TEST STRIP in your aquarium, swirl twice, and compare to our color chart for fast and accurate results.

The Scientific Approach

For more detailed analysis, use the FRESHWATER MASTER TEST KIT, POND MASTER TEST KIT, SALTWATER MASTER TEST KIT, or REEF MASTER TEST KIT for precise readings of parameters.

Pick One (or Two)

Need to check your phosphate levels? What about ammonia? API offers specific test kits to test many different parameters, from general hardness and copper to pH and nitrate. Grab the one you need for a streamlined approach to testing.

Test Test Test Test Test Test
API QUICK START API AMMO-LOCK API pH UP API pH DOWN API NITRA-ZORB API PHOS-ZORB
Customer Reviews
4.7 out of 5 stars
12,072
4.6 out of 5 stars
4,832
4.6 out of 5 stars
611
4.5 out of 5 stars
1,620
4.4 out of 5 stars
2,520
4.5 out of 5 stars
411
Too much nitrites?
Too much ammonia?
Inappropriate pH levels?
Too much nitrates?
Too much phosphates?
test

Making a Better Underwater World

At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. 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.

Looking for specific info?

Product Description

Keep your fish healthy and thriving by testing your aquarium water's NO2 levels regularly with this easy-to-use API NITRITE TEST KIT for freshwater and saltwater aquariums. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Nitrite is produced in the aquarium by fish waste and uneaten fish food. Low levels of nitrite inhibit respiration and suppress the immune system; high levels cause suffocation. The API NITRITE TEST KIT tests for harmful nitrite levels from 0 to 5 ppm. This product comes with one nitrite bottle, one capped test tube, one instruction manual and one color card. API NITRITE 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.

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 1.5 x 2.38 x 5.13 inches; 2.4 ounces
  • Item model number ‏ : ‎ 26
  • Department ‏ : ‎ men, women
  • Date First Available ‏ : ‎ June 20, 2004
  • Manufacturer ‏ : ‎ Mars Fishcare
  • ASIN ‏ : ‎ B000255NC8
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.7 4.7 out of 5 stars 1,354 ratings

Important information

Safety Information

Please Read Instructions Before Use

Ingredients

Instructions, Testing Solution, Test Tube With Cap, Computer Analyzed Laminated Color Card.

Directions

Water should be tested for nitrite every other day when your aquarium or pond is first set up, and once a week after the biological filter has been established (in about 4-6 weeks).

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API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit
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Price-29% $11.98
List:$16.78
-13% $12.99
List:$14.99
$13.49-29% $11.99
List:$16.78
-29% $35.98
List:$50.48
-29% $9.48
List:$13.28
Delivery
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Customer Ratings
Easy to read
4.6
3.9
3.9
4.1
4.5
3.7
Easy to use
4.6
4.0
4.6
4.2
4.6
4.2
Accuracy
4.4
3.1
3.7
4.2
4.6
3.8
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Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,354 global ratings

Customers say

Customers like the ease of use, quality and performance of the pet supplies. For example, they mention it's simple to use, works well and is cost effective. Opinions are mixed on the color chart.

AI-generated from the text of customer reviews

53 customers mention48 positive5 negative

Customers are satisfied with the quality of the pet supplies. They mention it's a good kit, easy to use, and has clear instructions. Some say that the test has been accurate and helped them lower their nitrites. Overall, customers are happy with their purchase and recommend it to others.

"...These kits have been around for ages and are very accurate if you use them for their true intended purpose; freshwater community tanks or similar...." Read more

"I love it! It is very accurate...I lost three fish because my dipsticks were not working.This is very easy to use and very accurate...." Read more

"...You're better off getting more tests than just this one. This test has been accurate and helped me lower my nitrites though." Read more

"Works in 5 mins. Easy to use and gives accurate readings." Read more

38 customers mention35 positive3 negative

Customers find the pet supplies easy to use. They mention that the instructions are clear, the test is easy to perform, and the results are easy to read.

"The test was great and easy to use. Will buy more in the future." Read more

"...This is very easy to use and very accurate. If you want to avoid any nitrite stress you need to get this one" Read more

"Easy to use" Read more

"Really easy to use. I personally do not have trouble differentiating the color readings...." Read more

25 customers mention25 positive0 negative

Customers are satisfied with the performance of the pet supplies. They mention that it works as expected, it works well to test nitrite, and it has no issues. Some say that the product is great for testing the water of a pond and is easy to use.

"...Ammonia and nitrite test kits worked perfectly as in the past and averted many potential tadpole disasters and crying children...." Read more

"The test was great and easy to use. Will buy more in the future." Read more

"Good test" Read more

"Works well to test nitrite, however I'd recommend just getting the master test kit for the price of the two...." Read more

13 customers mention13 positive0 negative

Customers like the value of the pet supplies. They mention it's a great product for the fair price, cost effective, and provides many more tests per dollar than any other kits available.

"...Still great kits even after 40 years at a very affordable price.Highly recommended for their intended usage scenario." Read more

"...I can only find this test kit online and the price is always great with fast shipping." Read more

"Excellent way and only good nitrate kit for the money....the should make a digital kit that, mesures everything. ?.wouldmt that be nice" Read more

"Great test at a great price. Definitely recommended." Read more

5 customers mention5 positive0 negative

Customers find the pet supplies easy to read. They appreciate the flat bottomed test tubes and color codes that make nitrate text easy to understand.

"...will let you know when your nitrite is down near zero with easy to use color codes." Read more

"...The test is simple and easy to read and can be operated by my 9 year old." Read more

"Simple to use and easy to read. API is a company that is beginners friendly" Read more

"Simple to use and easy to read." Read more

10 customers mention4 positive6 negative

Customers are mixed about the color chart. Some mention that it seems very accurate, it is easy enough to compare to the color charts and figure out the reading, while others say that it was missing its color chart, did not include the require color code, and that too many colors look exactly the same.

"...stars because while it is fairly accurate, easy to use it was missing its color chart! Luckily, I had an old color chart from a master kit...." Read more

"...5mls of tank water 5 drops shake and wait 5 mins the color chart is easy to follow and accurate...." Read more

"It's OK, but too many colors look exactly the same. The card needs to be completely redone...." Read more

"...doing freshwater and it seems very accurate, it is easy enough to compare to the color chart and figure out the reading." Read more

Small tank, new fish
5 Stars
Small tank, new fish
This was ordered Sunday and just did the Nitrate test at about 12:30 pm Tuesday.
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Reviewed in the United States on August 30, 2020
Size: 180 testsVerified Purchase
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Reviewed in the United States on January 7, 2024
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Reviewed in the United States on April 22, 2023
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Top reviews from other countries

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Rahul
5.0 out of 5 stars Works well..easy to use..
Reviewed in India on February 7, 2021
Size: 180 testsVerified Purchase
valerio
5.0 out of 5 stars Ottimo prodotto
Reviewed in Italy on January 10, 2021
Size: 180 testsVerified Purchase
OMAR L. D.
5.0 out of 5 stars Excelente producto
Reviewed in Mexico on August 4, 2022
Size: 180 testsVerified Purchase
Zoé
5.0 out of 5 stars très bon
Reviewed in France on July 16, 2019
Size: 180 testsVerified Purchase
One person found this helpful
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THEIVANAYAGAM
4.0 out of 5 stars Poor package
Reviewed in India on May 15, 2018
Size: 180 testsVerified Purchase