API Freshwater Master Test Kit (800 Tests)

Test kit

Best for: Checking water quality, especially in new tanks

The standard liquid test kit for ammonia, nitrite, nitrate and pH. It's essential while a new tank cycles and useful whenever fish look unwell.

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What we like

New tanks being cycled, and any keeper who wants to know what's happening in the water.

None — it's an essential tool.

Shake the nitrate bottles hard as instructed, and read colours in natural light against the white part of the card.

How often should I test?

Every few days while cycling a new tank, then monthly or whenever fish look unwell.

Are strips just as good?

Liquid tests are generally more accurate than strips.

The kit, the gear and the patient part nobody tells you about — how to set up a tank so your first fish thrive.

Best for: Making tap water safe at every water change

Best for: Weekly water changes on 15–55 gallon tanks