Editor's pick
API
Freshwater Master Test Kit
The liquid test kit that shows what your fish cannot tell you. Invisible water problems kill more fish than anything, and this is how you catch them.
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Our take
Most fish deaths are water quality, not disease, and you cannot see ammonia or nitrite in clear water. This kit tests the five numbers that matter, pH, ammonia, nitrite and nitrate, and lets you catch a problem before it kills the tank. Liquid tests like this are far more accurate than the paper strips. Test weekly, and test whenever a fish looks off. Learning to read these numbers is the single biggest step from killing fish to keeping them.
Good to know
- Tests pH, ammonia, nitrite, nitrate
- Liquid, more accurate than strips
- About 800 tests per kit
- Colour-card comparison
Who it is for
- Every aquarium
- New tanks
Who should skip it
- Nobody: every fishkeeper should own one
- Relying on strips for accuracy
