Popular Aquarium Hydrometers of March 2021

November 20, 2020 By Jayne Washington

We present you a rating of 10 popular Aquarium Hydrometers of March 2021 with technical characteristics, customer reviews, and video reviews.

9.5
MECO(TM) Aquarium Glass Hydrometer Fish Tank Water Temperature Thermometer Salt Marine

Approx. price: $9.4.

Key Features:

  • Easy accurate readings for aquariums.
  • Green color indicates both ideal temperature and salinity.
  • Reads °C and °F Temperature in ¨H(40-100) and ¡æ(0-40).
  • Measure both Temperature and Specific Gravity of the water.
  • Green indicators are ideal range of water temperature and specific gravity for most salt water/ marine aquariums.
9.5
Accuni Binglinghua Professional Salinity Refractometer Automatic Temperature Compensation, Dual Scale [0-100ppt & 1.000-1.070 S.G.] Aquarium Sea Water Hydrometer

Approx. price: $25.

Key Features:

  • Salinity meter is to measure the salt solution, salt food and water, the concentration of the brine.
  • Characteristic of the proportion of the two all scale line can directly read solution and concentration.
  • Measuring range: salinity: 0-100 ‰, the specific gravity: 1.000 to 1.070
  • Minimum scale: salinity: 1 ‰, specific gravity: 0.001
  • Resolution: salinity: plus or minus 1 ‰, proportion:plus or minus 0.001 mm
9.1
KOOBOOK 1 Pcs Accurate Hydrometer Salinity Meter 1.000-1.027 Salinity Range 0-36 for Aquarium Fish Tank Marine Sea Saltwater

Approx. price: $9.9.

Key Features:

  • Made of high quality plastic, Withstand voltage,high transparency.
  • Special for culture of marine fish, the specific gravity and salinity of seawater are displayed once, easy to use and easy to read.
  • Keeping your hands clean,go underwater 15 cm (6 inch) depth to avoid errors caused by inhalation of oil film on the top of water.
  • When the water reaches full state (with the top of the baffle level), filed a hydrometer, this product can be hand or hang in the cylinder, automatic level function, can automatically find out the level to avoid the error.
  • Proper salinity level is one of the most important factors in the health of the fish.Readable and accuracy can up to ± 0.002 gravity unit.
4
Sturdy Budget Option

Hikari AccuProbe Aquarium Hydrometer, Full

Phillips Feed & Pet Supply Natural Balance

8.8
Hikari AccuProbe Aquarium Hydrometer, Full

Approx. price: $15.

Key Features:

  • "Dry Hands" design avoids contamination of aquarium or water sample
  • Accurate to 0.001 specific gravity and salinity (PPT) measurements
  • Auto-temperature correcting design
  • Designed to give a temperature-corrected reading in warm water aquariums – 68°F to 85°F (20°C to 30°C)
  • Self-leveling, hanging device included
5
Versatile Choice

Coralife BioCube Mini Aquarium Hydrometer

Central Garden & Pet

8.6
Coralife BioCube Mini Aquarium Hydrometer

Approx. price: $16.

Key Features:

  • Can remain submerged inside your aquarium or sump
  • Know your salinity in a glance
  • Compact design allows for discreet placement in the aquarium
  • Ideal for all saltwater aquariums and sumps
8.1
Coralife Energy Savers ACLAF877 Deep Six Hydrometer

Approx. price: $9.1.

Key Features:

  • Included components: All Components included in Picture and Description
  • Cora life is one of the markets leading manufacturers of premium aquarium products
  • Cora life'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
  • Coralife is one of the market’s leading manufacturers of premium aquarium products
  • Coralife's Hydrometer takes a true water sample at six inch depth
7.9
Seawater Salinity Refractometer,V-Resourcing Automatic Temperature Compensation Sea Water Salinity Measurer for Aquarium, Hydrometer, 0-100ppt & 1.000-1.070 Salinity Specific Gravity

Approx. price: $18.

Key Features:

  • Automatic Temperature Compensation: 10℃~30℃
  • Measuring range: salinity: 0-100 ‰, Specific Gravity : 1.000 to 1.070
  • Minimum scale: salinity: 1 ‰, Specific Gravity : 0.001
  • Resolution: salinity: ±1‰, Specific Gravity : 0.001 mm
  • Perfect for salty water tank and aquarium, seafood water tank, salty pools & spas and etc
7.5
Aquarium Equip UP Glass Saltwater Hydrometer - Reef Soft Coral Salinity Marine Fish Shrimp sea

Approx. price: $11. You may saved up to 7%.

Key Features:

  • 1. Easy to use 2. Green indicators are ideal range of water temperature and specific gravity for most salt water / marine aquariums 3. Hydrometer measures specific gravity 4. Need it for raising brine shrimp
7.1
Boxtech Aquarium Marine Test Sea Saltwater Hydrometer Reef - Ocean Hydrometer Salinity Meter - for Fish Tank Water Salinity Specific Gravity Test

Approx. price: $11.

Key Features:

  • Safe Material:Made of plastic,aquarium clear Automatic Accurate Readable SaltWater Hydrometer.
  • Durable Clear Acrylic:Accurate, durable, and easy to read your marine aquarium's salt level and specific gravity,Small and waterproof.if the specific gravity between 1.000 - 1.019,show that the specific gravity is small;if the specific gravity between 1.020 - 1.023,show that the specific gravity is nomal;if the specific gravity between 1.024 - 1.030,show that the specific gravity is big;
  • Clearly Safe Zone Indicated:Includes solinity and specific grovity scales.The outside rang of scale indicates salinity(PPT).The inside range of scale indicates gravity.And with safe zone clearly indicated.Range of use: 0-40 degrees (1.000-1.030).If the salinity ppt between 32 - 40,show that the salinity hydrometer is high;If the salinity ppt between 27 - 31,show that the salinity hydrometer is normal; If the salinity ppt between 0 - 26,show that the salinity hydrometer is light.
  • Wide Usage:Fit for brackish and marine aquariums.Perfect for testing both salinity and specific gravity of your brackish and marine tank.Includes solinity and specific grovity scales.Suitable for fresh water and sea water.
  • Easy to Read and Use:The easy-to-read swing-arm pointer and extra wide stable base provide an accurate test result.
6.6
Kocome Marine Hydrometer Reef Fish Tank Aquarium Water Salinity Specific Gravity Tester

Approx. price: $7.7.

Key Features:

  • Accurate and easy to read.
  • Size: 3.54×4.72×0.59in (Approx.).
  • Readings are temperature-corrected & accurate to +/- 0. 002 specific gravity units which range from 1. 000 - 1. 030 specific gravity.
  • It is optimum to be put into below 6" deep water, so it can avoid the error from the oil slick.
  • Perfect for testing both salinity and specific gravity of your brackish and marine tank.

How to Use a Hydrometer for Fish Tanks

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