D-D H2Ocean Portable Refractometer Salinity Checker– SeawaterD 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

rubble zones

Found across parts of the Indo-Pacific

Panulirius versicolor is a species of spiny lobster that lives in tropical reefs

a soft sand bed

but apart from being mostly yellow

Temperament:Generally peaceful but delicate and easily stressed

It can be found on sheltered coral reefs at depths of from 3 to 30 metres and can reaches a length of 8

Avoid strong turbulent flow that constantly pushes the fish around

it requires specific care

the meter features a clear display and simple controls

is a delicate and unusual marine pipefish with a long slender body

as they are often better adapted to aquarium foods and conditions