Red Sea Reef-spec Seawater Refractometer Substrate SizesContains 250 tests and includes

SizesContains 250 tests and includes 3 test bottles

Weight Approx

Push the bubble counter stem into the top of the fine adjustment valve - it will seal however is not a 'tight fit'

Adjustable flow regulators control amount of air entering reaction chamber to produce perfect amount of “skimmate”

then soak for 8 hours with a solution containing 3 tablespoons of alpha™

Red Sea Reef-spec Seawater Refractometer Substrate SizesContains 250 tests and includesSEAWATER REFRACTOMETER High Accuracy Seawater Refractometer Red Seas Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25oC 77 0F. Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl rather than seawater) and at a temperature of 15oC 59 0F rather than 25oC 77 0F. Thus, a