Red Sea Reef-spec Seawater Refractometer Substrate then soak for 8 hours

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

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

Pickup in store or MELBOURNE METRO DELIVERY only

We repeated trial and error

Aquarius pumps offers a 2-year guarantee

Red Sea Reef-spec Seawater Refractometer Substrate then soak for 8 hoursSEAWATER 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