Water testing · Liquid test kit

API Freshwater Master Test Kit

Freshwater monitoring; follow each test’s booklet instructions and compare with species-specific targets.

Freshwater liquid kit for pH, high-range pH, ammonia, nitrite, and nitrate.

Consider: No GH or KH: add API’s GH & KH kit for shrimp, soft-water fish or plants.

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US version. Check what’s in the box before you buy.

What it tests

Tests for
Ammonia, pH, high range pH, nitrite and nitrate
How to read it
Fill the test tubes, add the drops and compare the colors with the laminated card, which says what to do if a reading needs action.

Before choosing this model

  • Check expiry and reagent condition.
  • Use the exact test procedure and timing for each parameter.

In a new tank the readings that matter most are ammonia and nitrite, so check the kit reads both, or add a test that does: see how to test your water.

Have a reading? See what it means for your fish and what to do today.

Included items & upkeep

  • seven test solutions
  • four test tubes
  • holding tray
  • laminated color card
  • instructions

Plan for the routine work

  • Rinse test tubes with water immediately after testing.
  • Store reagents as directed and keep results separate by tank/date.

Check the use-by date printed on the pack before you trust a reading: old test solutions and strips can read wrong. Replace the kit once it is past that date.