D-D H2Ocean Portable Refractometer Salinity Checker– Seawater Coral Food ELEMENTALS TRACE Cu is a

ELEMENTALS TRACE Cu is a high purity copper solution used for compensating copper deficiencies in reef aquariums

including its own species

Without proteins

reducing clutter and enhancing the overall aesthetic of the aquarium area

crafted from durable acrylic

D-D H2Ocean Portable Refractometer Salinity Checker– Seawater Coral Food ELEMENTALS TRACE Cu is aD D H2Ocean Portable Refractometer Salinity Checker Seawater Some of the refractometers currently available to the aquarium hobby are designed for measuring saltwater (sodium chloride or brine solution) and not true seawater. Although seawater is mostly sodium chloride it also contains other elements such as magnesium and calcium that change the refractive index slightly and will give a slightly different result. The most common symptom of this