Editor's Choice - Our Favorite emours Aquarium Hydrometers

1. emours Aquarium Gloves Waterproof Elbow Length Long Sleeve Scratch Resistant Work Gloves 27-Inch

User Ratings: 71 6

emours First Impressions

"Great product."

At first, I was getting bubbles sticking to the rotating arrow. I decided to upgrade and it was easy to calibrate. The water was at what I expected it should be. Pretty darn accurate for the price. I don't want to deal with temperature correction or. Wipe down glass surface to dry it and put it back on the shelf til next time. When I'm testing my aquarium water, I want immediate, clear results.

  • emours Aquarium Gloves Waterproof Elbow Length Long Sleeve Scratch Resistant Work Gloves 27-Inch
  • Material: Polyvinyl chloride (PVC) + knit cloth; durable
  • PVC material is chemical and scratch resistant. With velvet inner, can keep your hand warm even in the cold water environment.
  • 27-Inch extra long design. Can keep your hand from getting wet inside the tank .Hand portion size:18x12.5cm/ 7 x 4.9inch ( L x W) ,one size fits most all(medium to large size); with elasticated cuffs, protects hands and arms up to the shoulder;
  • Thicken material,fully lined,waterproof. Keep your hands and arm dry when changing fish tank water, also can prevent allergies, cuts during aqua maintenance;
  • Multifunctional. Can be used in aquarium cleaning, also can be used in aquatic seafood fishing operations.
  • Manufacture: Kensid
  • Editor's Impressions Of The emours
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

emours Final Thoughts

"Great price."

My only criticism would be that it's a little too dark. This one here was much cheaper,& exactly the same as they sold in the store. Make sure to knock out the bubbles on the white dial by hitting it with your knuckle. Calibrate with distilled water and test every so often. At first, I was getting bubbles sticking to the rotating arrow. Now that it's calibrated I love it! Compare it with the refractometer and adjust the refractometer so that it matches.

Overall Score
4.4


(40 Points)

2. Coralife Energy Savers ACLAF877 Deep Six Hydrometer

User Ratings: 67 7

Coralife 100108103 First Impressions

"024 and my refracto read."

I found mine was calibrated out of the box. At first, I was getting bubbles sticking to the rotating arrow. Wipe down glass surface to dry it and put it back on the shelf til next time. So once your instant ocean shows a measurement. Does just as good of a job of any meter you would buy at the store! I tried it over and over and no bubbles! Simple to use, but if there are any air bubbles the results will be way off.

  • Coralife Energy Savers ACLAF877 Deep Six Hydrometer
  • 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
  • Specific Gravity and Salinity PPT Scales
  • Optimal Specific Gravity / Salinity range indicator on scale
  • Manufacture: Central Garden & Pet
  • Product Dimensions: 6.69 x 0.79 x 4.72 inches; 3.2 Ounces
  • Editor's Impressions Of The Coralife 100108103
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

Coralife 100108103 Final Thoughts

"Easy instructions."

I couldn't decide between this and one of the float arm meters or both. Once I figured that out, it works great. Now its easy to make sure I have the correct amount of salt in my aquariums. I use this for my 10g brackish and it works ok. My only criticism would be that it's a little too dark. I will update later to see if the refractor will keep its calibration. The instant ocean hydrometer will always be right.

Overall Score
4.3


(543 Points)

3. Premium Salinity Refractometer with Automatic Temperature Compensation for Saltwater, Aquarium, Mari...

User Ratings: 75 9

ONE250 First Impressions

"Arrived quickly."

I HIGHLY recommend this to Aquarists! Find a good light source to make reading easier. But with alittle persistance I am able to read it. My corals will be much happier now. I would recommend this product to anyone that has a marine aquarium. It's perfectly accurate based on the known calibration fluid. When I compared it to what my local pet store was reading my water at it was dead on.

  • Premium Salinity Refractometer with Automatic Temperature Compensation for Saltwater, Aquarium, Marine Reef Tank Testing - Dual Scale (0-100ppt & 1.000 to 1.070 S.G.)
  • ✔ Hand-held analog salt meter; Light-weight, portable, includes protective carrying case
  • ✔ Measures concentration of salt and dissolved solids in aqueous solution
  • ✔ Provides reading in parts per thousand (0-100PPT) and specific gravity (1.000 to 1.070 SG)
  • ✔ Ideal for on-site measurements in processing and storage areas, or in the field
  • ✔ Determine salinity during preparation of pickles, seafood products, frozen vegetables and fruits
  • Manufacture: ONE250
  • Product Dimensions: 8 x 3 x 2 inches; 9.14 Ounces
  • Editor's Impressions Of The ONE250
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

ONE250 Final Thoughts

"This tool does that."

Compare it with the refractometer and adjust the refractometer so that it matches. On the shaft of the refractometer, there's a little, rubber-covered nub. I bought this refractometer as a more accurate option for salinity than a hydrometer. Be sure to buy the calibration solution and test this before use! Bought this as a back up refractometer. 026 with the new Aquatic Experts fluid. I felt it wasn't accurate which was verified by my LFS.

Overall Score
4.5


(18 Points)

4. Sinotech Hand Held Brix Honey Refractometer Rhb-90atc withCalibration Oil

Sinotech First Impressions

"This tool does that."

When I compared it to what my local pet store was reading my water at it was dead on. I would recommend this product to anyone that has a marine aquarium. Great product I used for beer making and my saltwater aquarium. Plus it is super easy to use and clean. I don't want to deal with temperature correction or. Get precise salinity readings in moments. Does just as good of a job of any meter you would buy at the store!

  • Sinotech Hand Held Brix Honey Refractometer Rhb-90atc withCalibration Oil
  • Test Fruit Brix And Honey Water
  • Heavy-duty and lightweight With its aluminum construction
  • ATC CompensationRange: 10°C~30°C (50°F~86°F)
  • Protable Type
  • 58-90%Brix 38-43 Be° (Baume) 12-27% Water
  • Manufacture: Sinotech
  • Editor's Impressions Of The Sinotech
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

Sinotech Final Thoughts

"NO BUBBLES!"

I bought this and a hydrometer because of the reviews saying its not accurate. I compared the readings using this hygrometer and the calibrated refractometer. Works great,& comes in a storage box. Used distilled water to calibrate, the screw is located under the rubber cap. So worth it considering its great quality and great price. My only criticism would be that it's a little too dark. This requires repeatedly tapping the arm with a pencil.

Overall Score
3.0


(1 Points)

5. emours Aquarium Gloves Waterproof Elbow Length Long Sleeve Scratch Resistant Work Gloves 27-Inch

User Ratings: 71 6

emours First Impressions

"Great product."

At first, I was getting bubbles sticking to the rotating arrow. I decided to upgrade and it was easy to calibrate. The water was at what I expected it should be. Pretty darn accurate for the price. I don't want to deal with temperature correction or. Wipe down glass surface to dry it and put it back on the shelf til next time. When I'm testing my aquarium water, I want immediate, clear results.

  • emours Aquarium Gloves Waterproof Elbow Length Long Sleeve Scratch Resistant Work Gloves 27-Inch
  • Material: Polyvinyl chloride (PVC) + knit cloth; durable
  • PVC material is chemical and scratch resistant. With velvet inner, can keep your hand warm even in the cold water environment.
  • 27-Inch extra long design. Can keep your hand from getting wet inside the tank .Hand portion size:18x12.5cm/ 7 x 4.9inch ( L x W) ,one size fits most all(medium to large size); with elasticated cuffs, protects hands and arms up to the shoulder;
  • Thicken material,fully lined,waterproof. Keep your hands and arm dry when changing fish tank water, also can prevent allergies, cuts during aqua maintenance;
  • Multifunctional. Can be used in aquarium cleaning, also can be used in aquatic seafood fishing operations.
  • Manufacture: Kensid
  • Editor's Impressions Of The emours
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

emours Final Thoughts

"Great price."

My only criticism would be that it's a little too dark. This one here was much cheaper,& exactly the same as they sold in the store. Make sure to knock out the bubbles on the white dial by hitting it with your knuckle. Calibrate with distilled water and test every so often. At first, I was getting bubbles sticking to the rotating arrow. Now that it's calibrated I love it! Compare it with the refractometer and adjust the refractometer so that it matches.

Overall Score
4.4


(40 Points)

6. Aeroway Salinity Refractometer, Aquarium & Seawater - Dual Scale (1.0 to 1.070 S.G.)

User Ratings: 79 3

Aeroway 8541957182 First Impressions

"021 the other read."

Make sure to knock out the bubbles on the white dial by hitting it with your knuckle. Normally that gives the more accurate reading. I will get one later but for now this will do, since im just starting. I run brackish tanks and it works perfectly. I strongly recommend a refractometer vs. This device is a godsend and so much easier and cleaner to use. On the shaft of the refractometer, there's a little, rubber-covered nub.

  • Aeroway Salinity Refractometer, Aquarium & Seawater - Dual Scale (1.0 to 1.070 S.G.)
  • Measure salt water or salinity of water, ideal for aquariums and marine monitoring.
  • Features automatic temperature compensation (ATC),The main part is made of chromium, it's very durable.
  • Measures on 2 scales, Specific Gravity (D 20/20) and parts per thousand (‰).
  • Comes with hard case, dropper, screwdriver and cleaning cloth.
  • We offer premium quality and the best service, no matter what reason cause dissatisfaction,just return it within 30 days for a full refund. No questions asked, no hassle.
  • Manufacture: Aeroway
  • Editor's Impressions Of The Aeroway 8541957182
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

Aeroway 8541957182 Final Thoughts

"Works great!"

Simple to use, but if there are any air bubbles the results will be way off. I compared the readings using this hygrometer and the calibrated refractometer. Normally that gives the more accurate reading. It's a basic but reliable refractomer I use it for my aquariums. Every time I leave to do something I come back and it's at the bottom of my tank. I bought this and a hydrometer because of the reviews saying its not accurate. So worth it considering its great quality and great price.

Overall Score
4.6


(43 Points)

7. UEETEK Heavy Duty Submersible Pump for Aquarium,Powerhead Fountain Water Hydroponic Pump with US-plu...

User Ratings: 51 49

UEETEK First Impressions

"Other then that."

Just give me one simple, accurate reading to go by, and I'm happy. Make sure to knock out the bubbles on the white dial by hitting it with your knuckle. Comes with a nice carrying case for easy and secure transportation. Does just as good of a job of any meter you would buy at the store! This is perfect to keep a check on the salt level in your tank. Small problem with bubbles on the needle but other than that no issues. Very easy, turn screw very slowly to calibrate.

  • UEETEK Heavy Duty Submersible Pump for Aquarium,Powerhead Fountain Water Hydroponic Pump with US-plug for Fish Tank,2.3 x 1.7 x 2.0 inch (L x W x H)
  • This submersible pump is designed for reliability and ultra-quiet operation.
  • Small size, high efficiency, low consumption, low noise.
  • Suction cups to fit vertical or horizontal mounting.
  • Suitable for use in hydroponic systems, ponds, fresh and saltwater aquariums, fountains and filter systems.
  • Note: The item is with US plug adapter:NLY for 110V, NOT for 220V. Please confirm the voltage of your area before placing an order.
  • Manufacture: UEETEK
  • Product Dimensions: 2.28 x 1.65 x 1.97 inches; 7.41 Ounces
  • Editor's Impressions Of The UEETEK
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

UEETEK Final Thoughts

"Nice product!"

So once your instant ocean shows a measurement. When I saw the price offered on this one, I decided to buy and I love it. There are conversion charts and tables online. Make sure to knock out the bubbles on the white dial by hitting it with your knuckle. Small problem with bubbles on the needle but other than that no issues. Like that it comes with everything needed. Don't spend your money on calibration solution.

Overall Score
3.1


(3 Points)

8. Tiaoyeer Salinity Refractometer with ATC Refractometer for Seawater, Pool, Tank, Testing, Marine, Fi...

User Ratings: 70

Tiaoyeer First Impressions

"Would buy another!"

This refractor should last a good number of years. I have a 2000+ gallon pond and I just put salt in it last month. I have a 2000+ gallon pond and I just put salt in it last month. Definitely a lot cheaper than a refractometer. Clear readout with the ability to calibrate and focus. I HIGHLY recommend this to Aquarists! It is easy to read and perform the procedure in seconds.

  • Tiaoyeer Salinity Refractometer with ATC Refractometer for Seawater, Pool, Tank, Testing, Marine, Fishkeeping, Dual Scale-Specific Gravity 0-100PPT & 1.000-1.070
  • ACCURATE READINGS : The Aquariums refractometer can measure on 2 Scales Aquariums refractometer features Specific Gravity (D 20/20) 1.000-1.070sg and parts per thousand 0-100PPT (1‰=1ppt=1000ppm)
  • ADVANCED AUTOMATIC TEMPERATURE COMPENSATION(ATC)TECHNOLOGY:Adjust Automatically to Compensate for Temperature, Which makes it even easier to get fast results.
  • SIMPLY USE: Using the dropper to take a sample of wort and put it on the prism. Then hold the refractometer up to the light and look scale through the eyepiece.
  • WIDE USE: The Salinity Refractometer is ideal for Marine Monitoring, Aquariums Water Monitoring, Swimming Pool Water Measuring, Lab or Industrious Purposes.
  • PORTABLE SALINITY CONTENT TESTER: Easy to use, sturdy design, compact in size and light in weight, convenient to keep up and carry around.
  • ACCURATE READINGS : The Aquariums refractometer can measure on 2 Scales Aquariums refractometer features Specific Gravity (D 20/20) 1.000-1.070sg and parts per thousand 0-100PPT (1‰=1ppt=1000ppm)
  • ADVANCED AUTOMATIC TEMPERATURE COMPENSATION(ATC)TECHNOLOGY:Adjust Automatically to Compensate for Temperature, Which makes it even easier to get fast results.
  • SIMPLY USE: Using the dropper to take a sample of wort and put it on the prism. Then hold the refractometer up to the light and look scale through the eyepiece.
  • Manufacture: hsydzsy329
  • Product Dimensions: 5.7 x 1.37 x 1.37 inches; 8.78 Ounces
  • Editor's Impressions Of The Tiaoyeer
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

Tiaoyeer Final Thoughts

"Easy to read and use."

Make sure to knock out the bubbles on the white dial by hitting it with your knuckle. The water was at what I expected it should be. It is essential to get some specialized aquarium calibration fluid for 1. I have to recalibrate it ever use though which worries me sometimes. I compared the readings using this hygrometer and the calibrated refractometer. Comes with a nice carrying case for easy and secure transportation. Do not spend money on calibration fluid to calibrate this meter.

Overall Score
4.1


(5 Points)

9. TOPINCN Square Saltwater Hydrometer Salt Water Salinity Meter Accurate Automatic Hydrometer Salt Wat...

TOPINCN First Impressions

"Super easy to use."

Then I made a mark on it to set the salinity of my fish tank. This device is a godsend and so much easier and cleaner to use. 027, I'm so glad I bought this one and it came spot on. I would recommend you to purchase this and skip the other ones. This refractor should last a good number of years. Find a good light source to make reading easier. Just rinse with warm water afterwards.

  • TOPINCN Square Saltwater Hydrometer Salt Water Salinity Meter Accurate Automatic Hydrometer Salt Water Salinity Meter for Fish Tank
  • Accurate, durable, and easy to read sea water hydrometer
  • This product is designed with an automatic level function, can automatically identify the level to avoid errors
  • Very accurate measurement readings, please rest assured to purchase
  • And each hydrometer has a laser engraved patent number
  • Fit for brackish and marine aquariums. Perfect for testing both salinity and specific gravity of your brackish and marine tanks.
  • Manufacture: TOPINCN
  • Product Dimensions: 5.51 x 3.54 x 0.79 inches; 3.17 Ounces
  • Editor's Impressions Of The TOPINCN
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

TOPINCN Final Thoughts

"Case is nice as well."

The refractor was off out off the box. It works OK but seems pretty flimsy and it's feel that way. I got this to have a more accurate read than the hydrometer. This device is a godsend and so much easier and cleaner to use. Bubbles can greatly affect the reading. Be sure to adjust the focus by turning the eye focal when you first receive. Ambient room light at night is not enough and makes what you're viewing dark.

Overall Score
5.0


(1 Points)

10. Aquarium Refractometer, Seawater Salinity Meter Aquarium Optics Refractometer Temperature ATC Digita...

Hongzer First Impressions

"Easy to use."

Functions just as it is supposed to. It is essential to get some specialized aquarium calibration fluid for 1. It is easy to read and perform the procedure in seconds. It did not need adjusting to calibrate, though I tried to just to see how it worked. Once I figured that out, it works great. Be sure to buy the calibration solution and test this before use! So once your instant ocean shows a measurement.

  • Aquarium Refractometer, Seawater Salinity Meter Aquarium Optics Refractometer Temperature ATC Digital 0-10%
  • 0 to 10% salinity, 0.01% scale.
  • Durable aluminum body, durable and can use for a long time.
  • Adjust the focus by twisting the handle.
  • Compact design with rubber handle.
  • Soft and flexible eyepiece for added comfort. Instant and reliable aqueous solution measurement.
  • Manufacture: Hongzer
  • Item Weight: 8.4 ounces
  • Product Dimensions: 6.69 x 1.57 x 1.57 inches
  • Editor's Impressions Of The Hongzer
  • Accuracy
  • Quality
  • Value For Money
  • Affordability

Hongzer Final Thoughts

"So far so good."

It is a little cheaper made but it works great for the cost! Pretty darn accurate for the price. Ambient room light at night is not enough and makes what you're viewing dark. Normally that gives the more accurate reading. Now its easy to make sure I have the correct amount of salt in my aquariums. I was surprise that the product was really cheap compare to the other ones. This refractor should last a good number of years.

Overall Score
5.0


(2 Points)

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