API Freshwater Master Test Kit

API Freshwater Master Test Kit

The API Freshwater Master Test Kit is a freshwater aquarium test kit that measures pH, high-range pH, ammonia, nitrite and nitrate, so you can keep a close eye on water quality. It is made for freshwater fishkeepers who want reliable, repeatable readings at home, from first-time tank owners cycling a new aquarium to experienced hobbyists maintaining an established community tank.

Key Benefits

• Tests five important freshwater parameters in one kit: pH, high-range pH, ammonia, nitrite and nitrate.
• Gives quick, accurate results with scientific accuracy for professional-level readings at home.
• Reusable, so you can test as often as your tank needs without buying a new kit each time.
• Sturdy glass test tubes with snap-tight caps make mixing and reading each sample straightforward.
• A convenient holding tub keeps the tubes and kit organised and easy to store between tests.
• A step-by-step instruction booklet with a colour chart explains how to read your results and how to correct unsafe water conditions.

How to Use

Take a few minutes each week to test your aquarium water and keep track of how conditions change over time. Follow the step-by-step instructions in the booklet for each test, then compare your sample against the colour chart to read the result. If a reading shows unsafe conditions, the booklet explains how to correct them. Regular testing makes it easier to spot problems early, before your fish show signs of stress.

Why Each Test Matters

The pH test shows how acidic or alkaline your water is. A reading of 7.0 is neutral, anything higher is alkaline and anything lower is acidic. Different fish species need different pH levels, so keeping your tank at the right level for your particular fish is key to good water quality.

The ammonia test is vital because fish release ammonia continually through their gills, urine and solid waste, and uneaten food and other waste add more. Your biological filter, or the natural aquarium cycle, normally deals with it, but as with any natural process imbalances can occur and ammonia can spike unexpectedly. Once detected, ammonia should be removed, otherwise it can damage your fish's gill membranes and harm their respiration, which can eventually result in fish death. Even small amounts stress fish, suppress their immune systems and make disease outbreaks more likely. You can remove ammonia with a partial water change and by dosing with a solution specifically designed to treat ammonia.

The nitrite test checks for toxic nitrite so that steps can be taken to remove it if it appears. Left untreated, nitrite hinders normal fish respiration and can eventually lead to fish death. Even low levels stress fish, suppress their immune systems and increase the likelihood of disease. A partial water change removes nitrite from your tank.

The kit also tests high-range pH and nitrate, giving you a fuller picture of your freshwater aquarium's condition.

Suitable For

• Freshwater aquariums of any size, from small starter tanks to larger community setups.
• New aquarium owners who want to monitor the tank as it matures.
• Established aquarists who want regular weekly water checks.

Compatibility

Designed for testing the water in freshwater aquariums.

Specifications

• Tests for: pH, high-range pH, ammonia, nitrite and nitrate
• Number of tests: 800
• Test solutions: 7
• Test tubes: 4 glass tubes with snap-tight caps
• Reusable kit with holding tub for storage
• Step-by-step instruction booklet with colour chart

What's Included

• Test kit containing 800 tests
• 7 test solutions
• 4 glass test tubes with snap-tight caps
• Holding tub for easy storage
• Easy-to-read, step-by-step instruction booklet
• Colour chart

Frequently Asked Questions

What does the API Freshwater Master Test Kit test for?
It measures pH, high-range pH, ammonia, nitrite and nitrate in freshwater aquariums.

How many tests do I get?
The kit contains 800 tests, supplied with 7 test solutions.

How often should I test my aquarium water?
Take a few minutes each week to monitor your tank. Because the kit is reusable, you can also test more often, for example when ammonia or nitrite is a concern.

Why is ammonia testing so important?
Fish, uneaten food and other waste all add ammonia to the water, and it can spike unexpectedly even in a cycled tank. It can damage gill membranes and harm respiration, and even small amounts stress fish and weaken their immune systems. A partial water change and an ammonia-treating solution can help remove it.

What should I do if nitrite shows up?
Nitrite is toxic and hinders normal fish respiration, so it should be removed as soon as it is detected. A partial water change removes it from your tank.

What is the neutral pH reading?
A pH of 7.0 is neutral. Higher readings are alkaline and lower readings are acidic. Different fish species need different pH levels, so check what your fish require.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

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No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.