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At AquaCave, we offer some of the best selection and best prices on aquarium test kits for you marine, reef, and freshwater aquarium. Aquarium Test Kits have a place in every aquarium application. They are necessary to keep your water chemistry in check. We have kits for testing just about every water parameter including pH, alkalinity, nitrates, nitrites, ammonia, organics, phosphates, magnesium, boron, iodine, oxygen, ozone and many more.

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  • API High Range PH Test Kit for Saltwater API High Range PH Test Kit for Saltwater

    API

    API High Range PH Test Kit for Saltwater

    API Test Kit High Range PH for SaltwaterUse to measure pH changes in marine aquariums, aquariums with African cichlids, and very alkaline tap water. Reads the pH of water within the high range of 7.4 to 8.8. 160 tests per kit. API Test Kit High Range PH...

    $9.48
  • API KH Test Kit  for Fresh or Saltwater API KH Test Kit  for Fresh or Saltwater

    API

    API KH Test Kit for Fresh or Saltwater

    API Test Kit KH for Fresh or Saltwater.Tests tap water & fresh or saltwater aquariums for carbonate hardness (KH). Can be used to determine the proper dose of pH buffers.    API Test Kit KH for Fresh or Saltwater.Tests tap water &...

    $8.99
  • Seachem Ammonia Alert Sensor Seachem Ammonia Alert Sensor

    Seachem

    Seachem Ammonia Alert Sensor

    Seachem Ammonia Alert Ammonia Alert™ is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or...

    $8.26
  • pH Alert Sensor by Seachem

    Seachem

    pH Alert Sensor by Seachem

    pH Alert Sensor by Seachem.pH Alert is a unique color device designed to be placed in the aquarium or filter and monitor pH continuously. A sensor changes color reversibly to alert you shifts to in pH levels between 5.8 and 8.2. FRESHWATER ONLY. No...

    $6.95
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