Coralife Deep Six Aquarium Hydrometer

Deep six unreliable saline measurements with the Coralife Deep Six Aquarium Hydrometer. This handy hydrometer takes a true water sample at a six inch depth and gives a temperature-corrected specific gravity/salinity reading in warm water aquariums. A bubble diffuser on the water intake keeps bubbles from forming on the needle for more accurate readings and a self-leveling hanging device lets you take readings without touching the water. A must-have for any warm-water aquarist!