• 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.
  • photo of D-Klor natural vitamin c dechlorinator with Aloe vera
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    Instant D-Klor

    $3.95$52.95
    Removes chlorine and breaks the chlorine/ammonia bond in chloramines. Instant D-Klor is a natural dechlorinator formulated using sodium ascorbate which is a natural source of Vitamin C. D-Klor's Vitamin C is beneficial to fish, invertebrates and live aquarium plants. Instant D-Klor's aloe vera helps to enhance the fish's natural protective surface slime coating.  
  • Photo of small clear bottle full of Hanna Instruments Buffering solution
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    Buffer solution, 16 oz. Formulation pH buffers are made of potassium dihydrogen phosphate and disodium hydrogen phosphate and are standardized with a pH meter calibrated to NIST primary standard buffer solutions (NIST 186Ie & 186IIe and NIST 158g S.R.M.).
  • 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 a Active Air Indoor-Outdoor Thermometer with Hygrometer which is self-standing and has four buttons and LCD display
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    This large display Indoor-Outdoor Thermometer with Hygrometer shows current temperature and humidity levels, and includes a remote probe for second zone temperature. Records high and low points for both temperature and humidity.  
  • Photo of yellow probe with flip top cover, button, and digital display
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    Simple, accurate, and cost effective way to measure low ranges of ammonia in fresh water!  The Checker HC uses an adaptation of the ASTM Manual of Water and Environmental Technology, D1426-92, Nessler method. The reaction between ammonia and reagents causes a yellow tint in the sample.  
  • 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
  • Photo of blue probe with flip top cover, button, and digital display
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    Stop wasting time struggling with a color chart. Get accurate water testing results with our simple handheld colorimeter.  Our freshwater alkalinity colorimeter brings you more precise technology from your standard chemical test kit. With direct digital freshwater alkalinity results, our handheld colorimeter eliminates the hassle of color matching.
    • The small size of our handheld colorimeter makes it portable and fits perfectly in your pocket.
    • Results are achieved easily with a simple, one-button operation.
    • Easy operation and direct results make measurement quick.
  • Photo of yellow probe with flip top cover, button, and digital display
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    Start getting accurate water testing results with our simple handheld colorimeter. Our ammonia colorimeter makes it easy to gain more confidence in your measurements. By bridging the gap between ammonia test kits and advanced instrumentation you no longer have to rely on the human eye to determine colors. Our handheld colorimeter eliminates the trouble of matching to a color chart by providing a direct digital ammonia result.
    • Our handheld colorimeter is portable and easily carried in your pocket.
    • Achieve your ammonia results easily with a simple, one-button design.
    • Don’t worry about matching the right color, our colorimeter does it for you.
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