Looking for the best Aquarium Hydrometers?
Discover now our comparison of the best Aquarium Hydrometers. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Aquarium Hydrometers are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Aquarium Hydrometers in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
- Measure salt water or salinity of water, ideal for aquariums and marine monitoring.
- Measures on 2 scales, Specific Gravity (D 20/20) and parts per thousand.
- Features automatic temperature compensation.
- Comes with hard case, dropper, screwdriver, user manual and cleaning cloth.
- The main part is made of chromium, it's very durable.
- Helps measure specific gravity and salt level in marine aquariums
- Features large, easy to read markings
- Simple design-blends in easily
- Item Package Weight: 0.185
- 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.
- Easy to read and accurate this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums.
- 🐟Marine hydrometer: Tests salinity and specific gravity in marine aquariums to help maintain a healthy tank
- 🐟Easy to Read & Use: Simply dunk in aquarium to fill with water, then set on level surface to read. The easy-to-read swing-arm pointer and extra wide stable base provide an accurate test result.
- 🐟Specification: The reading is temperature-corrected and accurate to +/-0.001. The unit of specific gravity is 1. 000-1. 030 (ppt value: 0-43.9 degrees), the safe area is 1.020-1.023 (ppt value: 30.2-34.2 degrees), and the low specific gravity area is 1.000-1.019 (ppt value: 0- 28.9 degrees), the higher specific gravity area is 1.024-1.030 (ppt value: 35.5-43.9 degrees).
- 🐟Safe Material: The salinity tester is made of transparent acrylic material, which is relatively hard and easy to read the salt and specific gravity of your marine aquarium. After use, soak this saltwater meter in mild acid(vinegar) for 30 minutes, rinse with tap water and air dry.
- 🐟Wide Usage: Fit for brackish and reef salt marine aquariums. Perfect for testing both salinity and specific gravity of your brackish and marine tank.Includes salinity and specific gravity scales.
- MEASURES ON 2 SCALES - Aquarium Refractometer features specific gravity (D20/20) 1.000-1.070 and parts per thousand 0~100‰ , allow to get two results in different units by one test
- WIDELY USE - Salinity Refractometer measures saltwater, salinity of water or seawater, ideal for aquariums, marine monitoring, fish-keeping, and saltwater pools
- ATC FUNCTION - Saltwater refractometer with automatic temperature compensation (ATC) function, allow you to obtain the accurate result faster and easier
- EASY TO USE - Put 2-3 drops of sample on the refracotmter’s prism, towards light, read the accurate readings through the optics eyepiece directly
- DURABLE MATERIAL: The optic salinity tester is made of aluminum and ABS rubber, anti-rust, non-staining and resistant abrasion. Portable Refractometer comes with plastic case, mini screwdriver,a dropper and a cleaning cloth
- For aquarium
- Floating type
- Easy accurate readings
- Ideal level between 1.020-1.025
- 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.
- For Salt Water / Marine Aquariums.
- Easy to use.
- Measure both Temperature and Specific Gravity of the water.
- Green s are for ideal of water temperature and specific gravity for most salt water / marine aquariums.
- Instruction:Place the hydrometer into water, and let it flow freely in the water; If water level below the green means more for fresh water is required; If water level above the green means more salt water is required.
- ¡ï For Salt Water / Marine Aquariums.
- ¡ï Easy to use.
- ¡ï Measure both Temperature and Specific Gravity of the water.
- ¡ï Green indicators are for ideal range of water temperature and specific gravity for most salt water / marine aquariums.
- ¡ï Instruction:Place the hydrometer into water, and let it flow freely in the water; If water level below the green indicator means more for fresh water is required; If water level above the green indicator means more salt water is required.
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Last update on 2025-06-07 / Affiliate links / Images from Amazon Product Advertising API