API pH Freshwater Aquarium Test Kit, 250 count

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About This Item

Details

  • Fast and easy and allows you to test a wide range of pH levels from 6.0 to 7.6 in one easy step—just dip and read.
  • Highly accurate color charts provide precise test results for easy problem detection in aquariums.
  • Chart colors are distinctive, making test results easy to read.
  • Package includes 250 strips.
  • Superior stay-dry, glass tube ensures testing accuracy.

Instructions

Learn More About API From Our Team of Experts

About API Testing

Testing the Waters

For fish to thrive, their aquarium water must be similar to the water in their natural environment. Poor water quality can cause stress, illness and even the loss of your fish. Important water quality parameters include ammonia, nitrite, nitrate, and pH. These can vary over time, and they are invisible to the eye, which is why it is necessary to test weekly. Choose from a wide range of API testing options like the Freshwater Master Test Kit or 5-in-1 Test Strips to accurately evaluate your water.

Pressed for Time? Just Dip and Read

Simply dip an API test strip into your aquarium, swirl it twice, and then use the color-coded chart to determine if your water is within safe parameters or if adjustments are needed. That’s it! API test strips are available in a 5-in-1 version, which includes testing for pH, nitrite, nitrate, carbonate, and general hardness. Ammonia and pH test strips are also available so you can mix and match according to your needs.

The Scientific Approach

Get professional results from the comfort of your home with API test kits. Measure up to six parameters with API Master Test Kits, or pick and choose from a wide variety of individual test kits. Both types of kits come with test tubes and a laminated, calibrated color card. API test kits allow for numerous tests, making them an inexpensive way to help keep your aquarium water quality in check.

How to Correct Aquarium Water Parameters

Too Much Ammonia?

Ammonia is released into the water through gills, urine, uneaten food and more. API Ammo-Lock detoxifies it instantly.

Inappropriate pH Levels?

Fish require a specific pH level to thrive. Use API pH Down to lower freshwater aquarium water pH to the right level.

Too Much Nitrite?

Use API Quick Start to quickly consume nitrite and help maintain an active biological filter.

Nitrates Too High?

API Nitra-Zorb helps remove nitrate and other toxins that can be harmful to fish and lead to algae growth.

About API

The team at API has a passion for fish and understands the rewards and relaxation fishkeeping can bring. For almost 60 years, they have developed premium products with a focus on proven and effective results. API offers a range of testing kits, water conditioners and nutritionally superior fish foods. They are dedicated to making a better underwater world for the benefit of fish and those who keep them.

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Questions & Answers

4 Customer Questions


do I need to get pH up and pH down when I use this product?

Answer by Chewy • Nov 08, 2019
This testing kit accurately measures the pH level and maintain a healthy freshwater community aquarium. We recommend testing the water and following the instructions in how to correct unsafe water conditions.

Can I use this in a goldfish tank(40 gallons) and if so what should their level be

Answer by Chewy • Jun 23, 2020
The API PH Strips are perfect for goldfish aquariums. A goldfish prefers a pH level of between 7 and 8.

Can these be used to test a betta fish water? If so, what oh should their water be?

Answer by Chewy • Apr 20, 2020
This kit will test a wide range of pH levels from 6.0 to 7.6. It can be used for a betta tank since they should be kept in water close to 7 pH.

Can this be used for saltwater

Answer by Chewy • Jul 24, 2019
This test kit is suitable for Freshwater only. It is recommended to use API pH Freshwater & Saltwater Aquarium Test Strips for saltwater.
4.6
Rated 4.6 out of 5 stars
79 Ratings

30 Customer Reviews



Rated 5 out of 5 stars
By Patricia on Jun 23, 2025

API is a go to

Testing ph is vital to healthy aquarium water. I test 2 or 3 times a week to keep water within a healthy range. API is a reliable brand giving accurate results.

Testing ph is vital to healthy aquarium water. I test 2 or 3 times a week to keep water within a healthy range. API is a reliable brand giving accurate results.


Rated 5 out of 5 stars
By Alma on May 8, 2025

PH Accuracy

Works Great. I use baking Soda as directed slowly. I wait a couple of hours, test the water, adjust if needed.

Works Great. I use baking Soda as directed slowly. I wait a couple of hours, test the water, adjust if needed.


Rated 3 out of 5 stars
By charles on Jun 23, 2025

easy to use

a good indication of what condition the tank water is in

a good indication of what condition the tank water is in


Rated 4 out of 5 stars
By Kristin on Apr 7, 2025

Fast shipping easy to browse website Very impressed

The item was the API pH test kit. Very easy to use and very helpful for setting up a new tank

The item was the API pH test kit. Very easy to use and very helpful for setting up a new tank


Rated 5 out of 5 stars
By William on Dec 13, 2024

They really work.

You have to work a bit to get them on and sometimes one is lost but they really help our 17 year old cockapoo get up and around on our hardwood/tile floors. I have

You have to work a bit to get them on and sometimes one is lost but they really help our 17 year old cockapoo get up and around on our hardwood/tile floors. I have them on auto ship.


Rated 5 out of 5 stars
By Marinia on Jun 30, 2025

Gives a concise reading on many water issues

Easy to use and read

Easy to use and read


Rated 5 out of 5 stars
By Maya on Mar 29, 2025

Great product

Very nice product was very helpful!

Very nice product was very helpful!


Rated 5 out of 5 stars
By Karen on Mar 11, 2025

Very happy

Exactly what I ordered and came on time

Exactly what I ordered and came on time


Rated 5 out of 5 stars
By Frank on Jan 16, 2025

Good stuff

Been using it for years

Been using it for years


Rated 5 out of 5 stars
By William on Nov 1, 2024

Happy customer

Got just what I wanted

Got just what I wanted