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Water testing is key to a successful aquarium. We have everything you can imagine to make sure you can keep your parameters where they need to be.
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    API Saltwater Master Test Kit

    $22.99
    The API® Saltwater Master Test Kit measures the 4 most important saltwater parameters – pH, ammonia, nitrite, and nitrate – to enable easy testing of your tank’s natural cycle, and to...

    Salifert Nitrite (NO2) Test Kit (Reef)

    $11.86
    Nitrite is a substance that is toxic to fish and invertebrates. It is a misconception that once a tank is through its cycle (first 3 or 4 weeks) that nitrite...

    Salifert Nitrate (NO3) Test Kit (Reef)

    $17.37
    When an aquarium has insufficient regions deprived of oxygen (= anaerobic zones) or denitrification proceeds incompletely then nitrate will build-up. A too high nitrate concentration can result in unwanted algae-growth...

    Salifert Ammonia Test Kit (Reef)

    $13.99
    Ammonia and ammonium are substances which should be converted rapidly into nitrite followed by nitrate and nitrogen gas. If this does not happen then the aquarium is not fully cycled...

    Salifert pH Test Kit (Reef)

    $10.92
    The pH value can have a major impact on the growth of corals and calcareous algae and on many biological processes. The pH should not be allowed to fluctuate more...

    Seachem MultiTest - Reef Special

    $29.99
    MultiTest™ Reef Special Combines the Phosphate, Silicate, and Iodine/Iodide kits Multi-cavity plate for simultaneous testing of up to 6 tests at the same time Includes reference for test validation Saltwater...

    Seachem MultiTest - Phosphate

    $14.69
    MultiTest™ Nitrite/Nitrate Measures nitrite to less than 0.1 mg/L and nitrate to less than 0.2 mg/L Multi-cavity plate for simultaneous testing of up to 6 tests at the same time...

    Seachem MultiTest - Nitrite & Nitrate

    $14.69
    MultiTest™ Nitrite/Nitrate Measures nitrite to less than 0.1 mg/L and nitrate to less than 0.2 mg/L Multi-cavity plate for simultaneous testing of up to 6 tests at the same time...

    Seachem MultiTest - Marine pH & Alkalinity

    $14.69
    MultiTest™ Marine pH & Alkalinity Unique dye that has a pronounced color change between 8.0 and 8.3 Multi-cavity plate for simultaneous testing of up to 6 tests at the same...

    Seachem MultiTest - Marine Basic

    $29.99
    MultiTest™ Marine Basic Combines the Marine pH & Alkalinity, Ammonia, and Nitrite & Nitrate kits Multi-cavity plate for simultaneous testing of up to 6 tests at the same time Includes...

    Seachem MultiTest - Iodine & Iodide

    $14.69
    MultiTest™ Iodine & Iodide Catalysis based, sensitive to less than 0.0025 mg/L Multi-cavity plate for simultaneous testing of up to 6 tests at the same time Includes reference for test...

    Seachem MultiTest - Copper

    $14.69
    MultiTest™ Copper Measures all types of copper to less than 0.01 mg/L Multi-cavity plate for simultaneous testing of up to 6 tests at the same time Includes reference for test...

    Seachem MultiTest - Ammonia

    $14.69
    MultiTest™ Ammonia Measures total and free ammonia down to less than 0.05 mg/L Multi-cavity plate for simultaneous testing of up to 6 tests at the same time Includes reference for...

    Salifert Calcium Test Kit (Reef)

    $18.81
    Calcium is a major constituent of calcareous algae, skeletal material of hard corals and the skeletal needles of soft/leather corals. Calcium also fulfills many biological functions. Quite often a too...

    Salifert Phosphate Test Kit (Reef)

    $19.59
    Phosphate has several negative effects if present in a too high concentration. First of all undesirable algae growth might result. Making an aquarium an unpleasant sight. Phosphate also blocks or...
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