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    …calcium level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much calcium will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as calcium…

    $31.99 Regular Price: $
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    …to read, repeatable results with the large LCD display. No color charts to compare or iffy titration, just a clear number on your screen. Red Sea Calcium Pro Test Kit Our favorite all around test kits are the red sea kits. With easy to follow directions, and consistent results, the Red Sea Calcium…

    $174.99 Regular Price: $

    …tank. Important- Using conductivity with freshly mixed Bio-Actif saltwater will show about 10% low. It is recommended to use specific gravity for reading Tropic Marin Bio-Actif Salt. When you have added almost all of the salt and the mixture is fully dissolved, start measuring the specific gravity…

    $46.73 Regular Price: $
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    …measures inorganic phosphate to less than 0.05 mg/L, producing results in a yellow-green-blue color range for fast and easy to read results. Phosphate in natural sea water ranges from less than 0.01 mg/L to 0.3 mg/L. Phosphates are non-toxic to fish and most invertebrates, but are ideally kept…

    $15.99 Regular Price: $

    …that your equipment is reading correctly and your aquarium is at the right salinity with Tropic Marin's High Precision Hydrometer. Many tank inhabitants are sensitive even to minor changes of the water conditions. Unfortunately as we've all experienced, salinity reading equipment as well as…

    $34.69 Regular Price: $

    …Iodide is a concentrated, stabilized potassium iodide source for reef aquaria that will restore and maintain iodide levels to those found in natural sea water. Iodide is an important element required by invertebrates and many soft corals (gorgonians, sarcophytons, etc). Most iodine supplements on…

    $4.99 Regular Price: $
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    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $7.49 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $23.99 Regular Price: $

    …calcium level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much calcium will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as calcium…

    $7.49 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $23.99 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $7.49 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $22.99 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $99.99 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $99.99 Regular Price: $

    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $99.99 Regular Price: $
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    …calcium level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much calcium will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as calcium…

    $61.99 Regular Price: $
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    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $61.99 Regular Price: $
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    …level and compare the results to your starting point levels to find the difference. The difference between the starting point and the final reading is how much alkalinity will need to be replaced over the course of a 5-day span of time. We recommend testing at the same time of day as alkalinity…

    $31.99 Regular Price: $
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