• Picture of a box containing a test for water gh and kh.
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    The best way to keep your aquarium clean is to maintain good water quality. This will keep your fish strong and vibrant, as well as preventing disease.  Helps to buffer swings in pH that are dangerous to your fish.

  • Picture of a box of KH hardness testing kit from API
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    Keep your fish healthy and thriving by testing your aquarium water's KH levels regularly with this easy-to-use API CARBONATE TEST KIT for freshwater aquariums. API CARBONATE HARDNESS TEST KIT helps prevent pH problems by stabilizing aquarium pH in fresh and saltwater aquariums. Fast, easy, and accurate testing evaluates KH levels in aquarium water, so that they may be corrected if too low or high. Water with low KH is susceptible to rapid pH shifts, stressing fish and increasing the risk of disease.
  • picture of a Dissolved Oxygen Meter for Aquaculture with 7 buttons, a test wand and LCD display
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    The Dissolved Oxygen Meter is a must have for DO sensitive organisms or high bio-load environments. The HI 9147 Dissolved Oxygen Meter is designed for applications within an aquaculture operation. This unit is unique among DO meters in that comes with with a galvanic probe.
  • photo of two low range ammonia checker reagent bottles
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    The HI700-25 Ammonia LR Checker® Reagents are the replacement reagents for the HI700 Ammonia Low Range Checker® HC.
  • Picture of a Hanna Iron Checker kit with digital gauge, packets, test vials and a case
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    Improve the accuracy of your water testing results with our simple handheld colorimeter. Bring more precise technology to your testing with our iron colorimeter. You won't have to struggle to determine colors visually anymore as our handheld colorimeter eliminates the hassle of matching to a color chart by providing a direct digital iron result.
    • Our handheld colorimeter is portable and easily carried in your pocket
    • One-button operation makes getting your iron results simple
    • Trust your results are consistent with the built-in timer
     
  • picture of the API Freshwater Master Test Kit
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    This kit tests water for five different parameters that affect the health of freshwater fish. The kit can complete up to 800 tests.
  • Photo of small bottle containing nitrite test reagent
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    Highly recommended for all aquaponic systems! API reagent for Nitrite. Keep your fish healthy and thriving by testing your aquarium water's NO2 levels regularly with this easy-to-use API NITRITE TEST KIT for freshwater and saltwater aquariums.  
  • Photo of small plastic bottle of API Ammonia Reagent Bottle #1
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    Highly recommended for all aquaponic systems! API reagent for Ammonia bottle #1 and #2. Testing water parameters weekly helps prevent invisible water problems that can be harmful to fish. Fish continually release ammonia into the aquarium through their gills, urine and solid waste.
  • Picture of three bottles, two large and one small for a High Range Reagent Refills for Ammonia.
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    The HI707-25 are the replacement reagents for the HI707 Nitrite Low Range Checker® HC.
  • Product picture Digital Thermometer with Submersible Probe
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    Ideal for aquariums or large tanks! Get accurate temperature readings with this Digital Thermometer which has a simple appearance, unobtrusive design and an easy-to-read LCD display.
  • Picture of a small 30ml bottle of alkalinity reagents
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    The HI775-26 are the replacement reagents for the HI775 Freshwater Alkalinity Checker® HC. Alkalinity Reagents for fresh water are to be used with the Alkalinity Checker HC.  
  • photo of nitrite Low Range Checker Reagent packet
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    Nitrite Low Range Checker - Reagents for 25 Tests
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