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Concentrated trace elements for reef aquariums
the recommended Components Pro dose is 12 ml per 100 liters of water daily
Less complex laboratory grade accuracy - Requires only 1 reagent
Sleek modern design
Bright Red: Aluminum
D-D True Seawater Refractometer Mat Concentrated trace elements for reefWhat 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 largest percentage of salt in the sea is sodium chloride, the presence of other significant ions such as magnesium and calcium in natural sea water results