The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Coralife's Hydrometer takes a true water sample at six inch depth. Easy to read and accurate, this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums. Includes a self-leveling, hanging device and allows your hands to stay dry, avoiding contamination of aquarium.
Specific Gravity and Salinity PPT Scales
Optimal Specific Gravity / Salinity range indicator on scale
Bubble diffuser on water intake prevents micro-bubbles from forming on needle