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Water Testing

Aquarium Supplies

Water Test Kits

Using test kits to detect problematic water conditions is key to the sustainability of a healthy aquarium. For a fish-only tank, you should measure and monitor pH, alkalinity, ammonia, nitrite, and nitrate levels. In addition to these, you should also monitor the calcium, magnesium and strontium levels in a reef aquarium.

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  1. Hanna Instruments Checker Marine Calcium Colorimeter

    Hanna Instruments Checker Marine Calcium Colorimeter

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    Easier to use and more accurate than chemical test kits Colorimetric method Accuracy ±6% of reading 1 ppm (mg/L) resolution Large, easy to read digits Auto shut off Dedicated to a single parameter Two part reagent: one liqu...
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    $55.99
  2. Hanna Instruments Checker Total Chlorine Colorimeter

    Hanna Instruments Checker Colorimeter

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    Easier to use and more accurate than chemical test kits EPA approved DPD method Accuracy ±0.03 ppm (mg/L) ±3% of reading 0.01 ppm (mg/L) resolution (250 points) Large, easy to read digits Auto shut-off. Dedicated to a single ...
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    $49.99

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