ESU Coralife Deep Six Aquarium Hydrometer

The Coralife Deep Six Hydrometer has a unique design that allows the hobbyist to take a water sample at six inches in depth without submerging their hands in the water, thus avoiding the possibility of contamination. Samples taken at six inches in depth have been proven to give a more accurate salinity reading than surface samples.

The World S First Wide-Range Specific Gravity Meter That Takes Its Reading From 6 Inches Below The Surface

Every Unit Is Pre-Calibrated and Individually Tested For Guaranteed Accuracy

Easy To Use With A New, Revolutionary Self-Leveling Feature