• picture of clear plastic transfer pipettes
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    Great for highly accurate, hard to reach measurements and doses. Use for testing aquarium water to make sure your fish are safe and living in water with the right mix of chemicals.
  • Picture of small bottle of API pH test solution
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    Highly recommended for all aquaponic systems! API reagent for pH. Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API pH TEST KIT for freshwater aquariums.
  • Photo of small plastic bottle of API high range ph test
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    Highly recommended for all aquaponic systems! API reagent for High Range pH. Keep your fish healthy and thriving by testing your aquarium water's pH regularly with easy-to-use API pH TEST KIT for freshwater aquariums.
  • 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.  
  • Picture of a 100cc plastic syringe
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    Measures teaspoons, tablespoons, ounces, and milliliters. Quick! Clean! Easy! You will never pour to measure again.
  • picture of 4 Glass Replacement Test Tubes with lids
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    Set of 4 replacement test tubes for the API Master Aquarium Test Kit.
  • Picture of a pH test kit with bottle, test tube, and freshwater pH color card
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    For when you need a replacement in your main test kit! A fast and easy way to monitor the pH of your aquaponics system. Just three drops in a vial of system water, shake, and read.
  • 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.
  • 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.
  • 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 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 packets of Free Chlorine Reagent packets in small self contained packs.
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    These are reagents for the colorimetric determination of free chlorine. There are enough reagents for 25 tests and are for use with Hanna’s compatible benchtop and portable photometers. These high-quality reagents are manufactured in a state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.