Top 10 Hydrometers for saltwater aquarium in 2026

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.

• En promotion
• 1 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 - 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.

• En promotion
• en réappro

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.

AQUA-MEDIC - DensiMeter - Floating hydrometer

(5 reviews)

31.99 €

Densimeter by Aqua Medic is a hydrometer intended for the measurement of density [g/ml] - Tp. 25/4°C in seawater aquariums.

• En promotion
• en réappro

Densimeter by Aqua Medic is a hydrometer intended for the measurement of density [g/ml] - Tp. 25/4°C in seawater aquariums.