Aquarium Hydrometers

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Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 Ppt with Automatic Temperature Compensation, By Aqueous Lab
(35)

$19.88

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Zacro Pack of 2 LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature
(202)

$10.98

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HM Digital COM100 Waterproof EC/TDS And Temperature Combo Meter
(41)

$52.77

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Tri-Scale Refractometer ATC Brix 0-10%/ Salinity 0-100PPT/ Specific Gravity 1.000-1.070, for Saltwater Brackish Marine Reef Tank Salt Sea Water Hydroponic Aquarium Control Monitoring

$17.99

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Neptune Systems AquaController Apex Base System w/ Lab Grade pH Probe
(23)

$505.99

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Glass saltwater Hydrometer Thermometer reef Soft Coral
(9)

$10.99

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Full Range Hydrometer
(1)

$10.99

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Ph Meter and Value Controller with Probe Ph2010
(1)

$79.99

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Exo Terra Hygrometer
(169)

$6.54

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Professional Automatic Temperature Compensation Sea Water Salinity Refractometer for Aquarium, Hydrometer, 0-100ppt & 1.000-1.070 Salinity Specific Gravity
(142)

$22.00

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Amzdeal Salinity Refractometer Aquarium & Seawater - Dual Scale (1.0 to 1.070 S.G.)
(25)

$44.44

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FTCo. Refractometer Salinity Calibration Fluid/Solution (30ml) - More than 200 tests
(16)

$10.99

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Automatic Temperature Compensation Sea Water Salt Salinity Refractometer for Aquarium, 0% - 10% & 1.0 to 1.070 S.g. Dual Scale Hydrometer By Adeadvancedoptics
(135)

$20.00

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Coralife Energy Savers ACLAF877 Deep Six Hydrometer
(88)

$12.99

Avg. Savings $0.95
Fluval Sea Hydrometer for Aquarium, Medium
(50)

$10.99

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Teika Digital Salt Water Aquarium pH Meter and LCD Thermometer with TDS Water Quality PPM Meter Pen Home Improvement Set Tools
(16)

$24.99

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Coralife BioCube Mini Aquarium Hydrometer
(15)

$21.02

Avg. Savings $6
Neptune Systems AquaController Apex Wireless Expansion WXM Module
(14)

$124.95

Avg. Savings $10
Neptune Systems Apex Lab Grade Salinity/Conductivity Probe
(13)

$187.90

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Neptune Systems AquaController Apex - Lab Grade PH Probe
(12)

$79.95

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Newcomdigi Salinity Refractometer, salinity meter,Salimeter Measurement Tool for Aquarium & Seawater Dual Scale
(12)

$24.29

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Anura Lab Quality Pocket Size Digital Salinity, TDS EC & Temperature Meter Tester For Drinking Water, Salt Water Pools, Spas & Aquariums | +/- 1% Readout Accuracy
(10)

$75.00

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Salinity Refractometer, RISEPRO® Aquarium and Sea Water Dual Scale Hydrometer 0-100ppt & 1.000-1.070 Salinity Specific Gravity Marine Fishkeeping ATC RHS-10ATC
(9)

$14.90

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Tropic Marin ATM50002 Precision Thermometer
(4)

$30.99

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Handheld Refractometer, PYRUS Automatic Temperature Compensation Sea Water Salinity Refractometer Salimeter Measurement Tool for Aquarium Hydrometer, Dual Scale 1.000-1.070 S.G.
(3)

$12.99

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YEME Automatic Temperature Compensation Salinity Refractometer Salt Water Aquarium 0% - 10% & 1.0 to 1.070 S.G.
(3)

$17.99

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COCODE Refractometer Salinity ATC Hydrometer Aquarium Dual Scale Optical Salinity Meter Specific Gravity Automatic Temperature Compensation for Pool Sea Water Fish Tank Testing
(1)

$18.59

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UP Glass saltwater Hydrometer - reef Soft Coral salinity marine fish shrimp sea
(1)

$12.95

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Dr. Marine Saltwater Marine Aquarium Salinity Portable Refractometer Meter ATC 0~10% reef

$63.64

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