Top 10 Hydrometers for saltwater aquarium in 2026

AQUA-MEDIC - Salimeter - Floating hydrometer

(13 reviews)

8.99 €

Salimeter from Aqua Medic is used for the simple determination of the salt concentration in saltwater aquariums . In saltwater aquariums the specific gravity should be between 1.022 and 1.025.

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Salimeter from Aqua Medic is used for the simple determination of the salt concentration in saltwater aquariums . In saltwater aquariums the specific gravity should be between 1.022 and 1.025.

Hanna Instruments - Saltwater Salinity Tester - HI98319

(2 reviews)

107.99 €

The HI98319 Waterproof Salinity Tester is a simple, accurate, and economical way to determine salt concentration in saltwater aquariums.

HI98319 can measure salinity up to 70.00 g/L (ppt).

Results are displayed in g/L (ppt), practical salinity units (PSU) or specific gravity (SG) on a large dual-level LCD screen that also displays temperature. This waterproof tester uses a stainless graphite amperometric conductivity probe to determine the salt content of water.

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• 3 en stock

The HI98319 Waterproof Salinity Tester is a simple, accurate, and economical way to determine salt concentration in saltwater aquariums. HI98319 can measure salinity up to 70.00 g/L (ppt). Results are displayed in g/L (ppt), practical salinity units (PSU) or specific gravity (SG) on a large dual-level LCD screen that also displays temperature. This waterproof tester uses a stainless graphite amperometric conductivity probe to determine the salt content of water.

AQUA-MEDIC - DensiTower - Hydrometer cylinder

(2 reviews)

16.99 €

Hydrometer cylinder with overflow for the exact measurement of density by means of a hydrometer

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• 2 en stock

Hydrometer cylinder with overflow for the exact measurement of density by means of a hydrometer