The Best Freshwater Aquarium Test Kit

Last Updated on December 7, 2021 by Marco C.

Wondering what is the best freshwater aquarium test kit? From cheaper to more expensive, find the one that is ideal for you.

An aquarium water testing kit is one of the tools that every aquarist needs to have. They are necessary because they provide insight into the condition of your tank and can help you make adjustments if needed.

They provide you with crucial information as they guarantee whether your aquatic environment is healthy or not. Thinking of getting a new one and wondering what is the best freshwater aquarium test kit? Take a look and choose your favorite.

API Freshwater Master Test Kit

According to the reviews of satisfied customers of the API Freshwater Master Test Kit, this is the best freshwater test kit. It is considered the gold standard for testing at home. It is recognizable by its reasonable price and high precision.

This amazing kit is designed to measure the six essential aquarium levels. That is ammonia, pH, high pH range, water hardness, nitrite, and nitrate. However, in addition to measuring, it can also adjust them when necessary.

As for the instructions, they are easy to understand and are very beginner-friendly. This Master Test Kit consists of four test tubes, a holding tray, a test tube rack, and a laminated color card. This makes it very practical, fast, and easy.

The testing process consists of filling the tubes with water from your aquarium and adding test drops to the individual tubes. Then compare the color to the included reference card. Based on this, you will know if you need to take any action.


  • Covers all essential aquarium chemical levels
  • Can be used for over 800 tests


  • Contains only 4 test tubes to measure 6 different levels
  • Does not include tests for GH, KH, phosphate, iron, etc.

Sera Aqua-Test Box Aquarium Test Kits (+Cl)

The Sera Aqua-Test Box (+ Cl) is a great all-around test kit. It covers almost all your basic water parameters, but also some additional ones like phosphate and iron. So, it has a complete regime that is perfect for freshwater and saltwater aquariums.

What makes it very interesting but also useful is its carrying case. This will prevent that annoying loss of equipment. The test tubes are much larger than many standard liquid tests. This makes it easier to use and provides less fear of falling and breaking. Also, the color comparison table is much larger than in most tests and therefore much easier to read.

One of its disadvantages is the instructions. They are quite small and cramped and therefore cannot be scanned quickly to glean what you need to conduct the test.


  • It comes with everything you need for testing
  • Carrying case (well organized)
  • Large test tubes
  • Easy to read color comparison chart


  • Vague and confusing instructions
  • Not suitable for beginners

Nutrafin Master Test Kit

If you are looking for a good aquarium water test kit, try the Nutrafin Master Test Kit. It is a great choice for all those who want to try something new (add exotic fish or uncommon plants to your aquarium).

The Nutrafin Master Test Kit features liquid tests for ammonia, pH high range, pH low range, calcium, phosphate, iron, nitrite, nitrate, KH, and GH. This diversity makes it well-suited for use with freshwater and saltwater aquariums.

This aquarium water test kit includes five glass test tubes (with caps), two pipettes, one spoon, as well as booklets with instructions for each test parameter and a reference card for easy test comparison.

The only thing that might deter you from buying is its price. It is not suitable for everyone’s pocket. However, if you are looking for the most comprehensive testing kit available on the market – this is the best freshwater aquarium test kit you will find.


  • It has comprehensive testing of 10 factors
  • Easy and safe to use
  • Clear instructions
  • Comes with everything you need for testing


  • Not suitable for everyone’s pocket – quite expensive

API Ammonia Test Kit

The Ammonia API is a versatile and inexpensive aquarium water test kit. It is specifically designed to test for ammonia known as one of the most common causes of fish death. It is very accurate and precise as it can test ammonia levels as high as 0 to 8 parts per million. Amazing, isn’t it?

In addition, it is very simple and easy to use. It is distinguished by its easy-to-read color chart for quick comparisons. The testing process is also very simple and requires only mixing aquarium water with the test solution in the enclosed glass tube. Then compare the obtained results (color) with the reference card.

Finally, it is important to note that this kit comes with enough liquid for 130 tests per package. This means getting rid of purchases over the next few years.


  • Good price
  • Lots of tests
  • Fast, accurate, and easy to use
  • Suitable for both freshwater and saltwater aquariums


  • Does not include a remedy for high ammonia levels

Tetra EasyStrips Complete Aquarium Test Kit

Using the Tetra EasyStrips Kit you can quickly and conveniently check the health of your aquarium. In addition to being practical and accurate, these aquarium test strips offer very fast results.

It is great for use when setting up a new aquarium or changing water. Tap water contains chloramines, which is not too good for the health of your fish, but also for the overall aquatic environment. However, it only gives results on how much free chlorine (regular chlorine) and bound chlorine (chloramine) there are in the water. For complete safety, it is always better to add a dechlorinator.

This aquarium water test kit contains tests for chlorine, total ammonia, nitrites, nitrates, GH, KH, and pH. They are very easy to practice and the results are very easy to interpret. Also, this type of test is suitable for everyone, even for beginners in a freshwater hobby.


  • Provides the ability to perform multiple tests at once
  • Very easy to read and interpret
  • Affordable price


  • There is no way to know if total or free chlorine is being tested


These were our favorites, the best freshwater aquarium test kit you can buy on the market today.

Do you use aquarium water test kits too? What is your opinion about this type of product? Write to us below!

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