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Includes two Visors and two sets of mounting pegs
44 oz (Treats up to 300 gallons)
Coral Essentials Carbonate Up is concentrated Sodium Carbonate anhydrous granules at minimum 99
Max Flow: 4000 GPH
making it a cost effective means for reduction of nitrates in marine and freshwater aquariums
True Seawater Refractometer - D & D skimmer Includes two Visors and twoD D True Seawater Refractometer Hand held instrument for the measurement of the TRUE Salinity and Specific Gravity (S. G.) of sea water by refractive index. What is different about the D D Seawater Refractometer? Almost all hand held salt water refractometers available to the hobby are designed and calibrated for the testing of brine solutions, i. e. sodium chloride, and are not calibrated for the refractive index of natural sea water. Even though the
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