All Top Rated Aquarium Hydrometers

1. Salinity Refractometer for Seawater and ...
Aquarium Hydrometers

User Ratings: 80 3

[star rating="4.7"](1512 Points)
  • Quality [star rating='5']
  • Value [star rating='4.8']
  • Features [star rating='5']
  • Read Review
2. Exo Terra Terrarium Hydrometer
Aquarium Hydrometers

User Ratings: 66 5

[star rating="4.3"](1002 Points)
  • Quality [star rating='3.9']
  • Value [star rating='4.9']
  • Features [star rating='4.9']
  • Read Review
3. AUTOUTLET Refractometer Saltwater Aquari...
Aquarium Hydrometers

User Ratings: 83 2

[star rating="4.7"](757 Points)
  • Quality [star rating='4.2']
  • Value [star rating='4.9']
  • Features [star rating='5']
  • Read Review
4. Coralife Energy Savers ACLAF877 Deep Six...
Aquarium Hydrometers

User Ratings: 67 7

[star rating="4.3"](543 Points)
  • Quality [star rating='5']
  • Value [star rating='4.8']
  • Features [star rating='4.4']
  • Read Review
5. Instant Ocean SeaTest Hydrometer
Aquarium Hydrometers

User Ratings: 59 6

[star rating="4.2"](426 Points)
  • Quality [star rating='3.3']
  • Value [star rating='3.4']
  • Features [star rating='4.5']
  • Read Review
6. Fluval Sea Hydrometer for Aquarium, Medi...
Aquarium Hydrometers

User Ratings: 46 17

[star rating="3.7"](373 Points)
  • Quality [star rating='3']
  • Value [star rating='2.7']
  • Features [star rating='3.1']
  • Read Review
7. LemonBest 0%-10% Automatic Temper...
Aquarium Hydrometers

User Ratings: 75 5

[star rating="4.5"](315 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='5']
  • Read Review
8. RZ Aquariums Salinity Refractometer for ...
Aquarium Hydrometers

User Ratings: 74 3

[star rating="4.6"](296 Points)
  • Quality [star rating='5']
  • Value [star rating='4.6']
  • Features [star rating='4.2']
  • Read Review
9. Aquarium Salinity Refractometer for Brac...
Aquarium Hydrometers

User Ratings: 68 6

[star rating="4.4"](290 Points)
  • Quality [star rating='4.9']
  • Value [star rating='3.9']
  • Features [star rating='4.7']
  • Read Review
10. GXSTWU Reptile Hygrometer Thermometer LC...
Aquarium Hydrometers

User Ratings: 71 5

[star rating="4.4"](265 Points)
  • Quality [star rating='4.7']
  • Value [star rating='3.5']
  • Features [star rating='4.8']
  • Read Review
11. Automatic Temperature Compensation Sea W...
Aquarium Hydrometers

User Ratings: 50 10

[star rating="3.9"](145 Points)
  • Quality [star rating='4.9']
  • Value [star rating='3.3']
  • Features [star rating='3.2']
  • Read Review
12. TRZ Salinity Refractometer for Aquariums...
Aquarium Hydrometers

User Ratings: 58 7

[star rating="4.2"](112 Points)
  • Quality [star rating='4.6']
  • Value [star rating='5']
  • Features [star rating='4.1']
  • Read Review
13. Pen Type Salinity & Temperature Meter AT...
Aquarium Hydrometers

User Ratings: 49 17

[star rating="3.8"](99 Points)
  • Quality [star rating='4.1']
  • Value [star rating='3.2']
  • Features [star rating='3.8']
  • Read Review
14. capetsma Salinity Tester, Accurate Sea H...
Aquarium Hydrometers

User Ratings: 56 11

[star rating="4"](69 Points)
  • Quality [star rating='3.3']
  • Value [star rating='3']
  • Features [star rating='3.5']
  • Read Review
15. NEW RHS-10ATC 0-10% Salinity Refractomet...
Aquarium Hydrometers

User Ratings: 53 7

[star rating="3.9"](68 Points)
  • Quality [star rating='4.8']
  • Value [star rating='3.9']
  • Features [star rating='3.1']
  • Read Review
16. Sera Marin Hydrometer
Aquarium Hydrometers

User Ratings: 51 7

[star rating="4"](58 Points)
  • Quality [star rating='4.6']
  • Value [star rating='4.1']
  • Features [star rating='3.8']
  • Read Review
17. Coralife BioCube Mini Aquarium Hydromete...
Aquarium Hydrometers

User Ratings: 37 28

[star rating="3.3"](57 Points)
  • Quality [star rating='4.3']
  • Value [star rating='2.8']
  • Features [star rating='3.9']
  • Read Review
18. Amzdeal Salinity Refractometer Aquarium ...
Aquarium Hydrometers

User Ratings: 66 12

[star rating="4.2"](56 Points)
  • Quality [star rating='4.8']
  • Value [star rating='4.1']
  • Features [star rating='5']
  • Read Review
19. Dual Scale Salinity Refractometer ATC 0-...
Aquarium Hydrometers

User Ratings: 76 4

[star rating="4.6"](49 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='4.4']
  • Read Review
20. Aeroway Salinity Refractometer, Aquarium...
Aquarium Hydrometers

User Ratings: 79 3

[star rating="4.6"](43 Points)
  • Quality [star rating='4.2']
  • Value [star rating='4.9']
  • Features [star rating='4.7']
  • Read Review
21. emours Aquarium Gloves Waterproof Elbow ...
Aquarium Hydrometers

User Ratings: 71 6

[star rating="4.4"](40 Points)
  • Quality [star rating='3.5']
  • Value [star rating='4.5']
  • Features [star rating='4.3']
  • Read Review
22. Aichose Salinity Refractometer for Seawa...
Aquarium Hydrometers

User Ratings: 71

[star rating="4.5"](37 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='4.3']
  • Read Review
23. Seawater Salinity Refractometer,V-Resour...
Aquarium Hydrometers

User Ratings: 64 8

[star rating="4.3"](31 Points)
  • Quality [star rating='3.3']
  • Value [star rating='5']
  • Features [star rating='5']
  • Read Review
24. Pet Dog & Cat Refractometer,V-Resourcing...
Aquarium Hydrometers

User Ratings: 79

[star rating="4.7"](28 Points)
  • Quality [star rating='3.9']
  • Value [star rating='5']
  • Features [star rating='4.5']
  • Read Review
25. Premium Salinity Refractometer with Auto...
Aquarium Hydrometers

User Ratings: 75 9

[star rating="4.5"](18 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='4.2']
  • Read Review
26. KKmoon Salinity Refractometer, Handheld ...
Aquarium Hydrometers

User Ratings: 70 8

[star rating="4.2"](18 Points)
  • Quality [star rating='4']
  • Value [star rating='3.8']
  • Features [star rating='4.8']
  • Read Review
27. Eyourlife Salinity Refractomer Aquarium ...
Aquarium Hydrometers

User Ratings: 64 8

[star rating="4.4"](18 Points)
  • Quality [star rating='3.4']
  • Value [star rating='4.9']
  • Features [star rating='5']
  • Read Review
28. AUTOUTLET Salinity Refractometer for Aqu...
Aquarium Hydrometers

User Ratings: 89

[star rating="4.9"](14 Points)
  • Quality [star rating='4.3']
  • Value [star rating='5']
  • Features [star rating='5']
  • Read Review
29. Accurate Automatic Hydrometer Salt Water...
Aquarium Hydrometers

User Ratings: 63 16

[star rating="4"](13 Points)
  • Quality [star rating='4.4']
  • Value [star rating='3.4']
  • Features [star rating='4.5']
  • Read Review
30. KOOBOOK 1 Pcs Accurate Hydrometer Salini...
Aquarium Hydrometers

User Ratings: 44 27

[star rating="3.3"](11 Points)
  • Quality [star rating='2.8']
  • Value [star rating='2.7']
  • Features [star rating='2.7']
  • Read Review
31. Rhinoco Salinity Refractometer, Saltwate...
Aquarium Hydrometers

User Ratings: 75

[star rating="4.8"](10 Points)
  • Quality [star rating='5']
  • Value [star rating='3.9']
  • Features [star rating='4.5']
  • Read Review
32. Abuycs Salinity Refractometer for Seawat...
Aquarium Hydrometers

User Ratings: 86

[star rating="4.6"](10 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='5']
  • Read Review
33. Ade Advanced Optics aaosal Professional ...
Aquarium Hydrometers

User Ratings: 68

[star rating="4.5"](9 Points)
  • Quality [star rating='5']
  • Value [star rating='4.5']
  • Features [star rating='3.6']
  • Read Review
34. Kocome Marine Hydrometer Reef Fish Tank ...
Aquarium Hydrometers

User Ratings: 71

[star rating="4.6"](9 Points)
  • Quality [star rating='4.2']
  • Value [star rating='4']
  • Features [star rating='3.9']
  • Read Review
35. Hikari AccuProbe Aquarium Hydrometer, Fu...
Aquarium Hydrometers

User Ratings: 68 10

[star rating="4.3"](9 Points)
  • Quality [star rating='3.8']
  • Value [star rating='3.9']
  • Features [star rating='4.9']
  • Read Review
36. Aquarium Equip UP Glass Saltwater Hydrom...
Aquarium Hydrometers

User Ratings: 55 17

[star rating="3.8"](8 Points)
  • Quality [star rating='3.6']
  • Value [star rating='4']
  • Features [star rating='4.1']
  • Read Review
37. Pet Dog Cat Refractometer Pet Urine Spec...
Aquarium Hydrometers

User Ratings: 66 16

[star rating="4"](8 Points)
  • Quality [star rating='5']
  • Value [star rating='4.7']
  • Features [star rating='3.9']
  • Read Review
38. Rhino Clinical Pet (Dog & Cat) Refractom...
Aquarium Hydrometers
[star rating="5"](8 Points)
  • Quality [star rating='4.4']
  • Value [star rating='5']
  • Features [star rating='5']
  • Read Review
39. HunterBee Salinity Refractometer for Sea...
Aquarium Hydrometers

User Ratings: 53

[star rating="4.2"](7 Points)
  • Quality [star rating='4.5']
  • Value [star rating='3.5']
  • Features [star rating='3.6']
  • Read Review
40. Clinical Refractometer with ATC, Tri-Sca...
Aquarium Hydrometers
[star rating="5"](7 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='4.2']
  • Read Review
41. Tiaoyeer Salinity Refractometer with ATC...
Aquarium Hydrometers

User Ratings: 70

[star rating="4.1"](5 Points)
  • Quality [star rating='3.2']
  • Value [star rating='4.8']
  • Features [star rating='5']
  • Read Review
42. Pen Type Salinity & Temp Meter Measureme...
Aquarium Hydrometers

User Ratings: 36 25

[star rating="3.6"](5 Points)
  • Quality [star rating='3.8']
  • Value [star rating='2.6']
  • Features [star rating='3']
  • Read Review
43. Ade Advanced Optics aaosal-B Automatic T...
Aquarium Hydrometers

User Ratings: 26 41

[star rating="3"](4 Points)
  • Quality [star rating='3.2']
  • Value [star rating='3.5']
  • Features [star rating='3.1']
  • Read Review
44. ZRM&E Seawater Hydrometer for Aquarium A...
Aquarium Hydrometers

User Ratings: 70 30

[star rating="3.8"](4 Points)
  • Quality [star rating='3.8']
  • Value [star rating='4']
  • Features [star rating='3.2']
  • Read Review
45. UEETEK Heavy Duty Submersible Pump for A...
Aquarium Hydrometers

User Ratings: 51 49

[star rating="3.1"](3 Points)
  • Quality [star rating='3.5']
  • Value [star rating='4']
  • Features [star rating='3.1']
  • Read Review
46. Hikari AccuProbe Aquarium Hydrometer, Mi...
Aquarium Hydrometers

User Ratings: 55 45

[star rating="3.2"](2 Points)
  • Quality [star rating='3.8']
  • Value [star rating='2.2']
  • Features [star rating='4']
  • Read Review
47. Aquarium Refractometer, Seawater Salinit...
Aquarium Hydrometers
[star rating="5"](2 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='5']
  • Read Review
48. HydroLogic HLTDS DM-2 Industrial Monitor...
Aquarium Hydrometers
[star rating="5"](1 Points)
  • Quality [star rating='5']
  • Value [star rating='4.5']
  • Features [star rating='4.7']
  • Read Review
49. TOPINCN Square Saltwater Hydrometer Salt...
Aquarium Hydrometers
[star rating="5"](1 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='4.4']
  • Read Review
50. Dr. Marine Saltwater Marine Aquarium Sal...
Aquarium Hydrometers
[star rating="5"](1 Points)
  • Quality [star rating='5']
  • Value [star rating='5']
  • Features [star rating='4.2']
  • Read Review
51. Digital Salinity Tester for Salt Water -...
Aquarium Hydrometers
[star rating="5"](1 Points)
  • Quality [star rating='4.6']
  • Value [star rating='4.6']
  • Features [star rating='5']
  • Read Review
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