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Aquarium Hydrometers - 8 - Page 4 - Mega Sale! Save up to 30%


Mega Sale! Up to 30% off on Aquarium Hydrometers at Naj Blog, Page 4. Top brands include La Crosse Technology, HM Digital, UEETEK, Coralife, COCODE, Ade Advanced Optics, Bubblefin, TekcoPlus, Eowpower, YEME, AquaticHI, PENSON & CO., Agriculture Solutions, American Marine, & Sinotech. Hurry! Limited time offers. Offers valid only while supplies last.



La Crosse Alerts 926-25102-PET Aquarium Monitoring System with Wet Probe for Early Warning Alerts & Wireless mobility
La Crosse Alerts 926-25102-PET Aquarium Monitoring System with Wet Probe for Early Warning Alerts & Wireless mobility
By La Crosse Technology
In Stock
$49.95

mpn: 926-25102-PET, ean: 0757456087412,

4.1 out of 5 stars with 236 reviews
The La Crosse Alerts Monitor and Alert System by La Crosse Technology is easy to use, flexible and extremely affordable for its versatile functionality. FREE NEW APP (ITunes & Android compatible) to view charts, tables, and build custom text and e-ma...


HM Digital COM100 Waterproof EC/TDS And Temperature Combo Meter
HM Digital COM100 Waterproof EC/TDS And Temperature Combo Meter
By HM Digital
In Stock
$69.99
$48.79
You Save: 30%

mpn: COM-100, ean: 0891144000007,

4.0 out of 5 stars with 18 reviews
Product description: HM Digital's COM-100 is a waterproof combination EC/TDS/Temperature meter that is ideal for all water quality testing, water purification applications, drinking water, wastewater regulation, aquaculture, hydroponics, colloidal si...


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)
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)
By UEETEK
In Stock
$12.99
$12.49
You Save: 4%

mpn: AK14906HJBX18YT3KDXQ07GKA, ean: 0192189038582,

4.9 out of 5 stars with 14 reviews
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.DescriptionThis Submersible Fountain Pump is small, compact and ultra quiet, making it perfect for aquariums, fountai...


Coralife BioCube Mini Aquarium Hydrometer
Coralife BioCube Mini Aquarium Hydrometer
By Coralife
In Stock
$15.70
$12.92
You Save: 18%

mpn: 100115642, ean: 0096316156425,

4.9 out of 5 stars with 16 reviews
Coralife BioCube Mini Hydrometer can remain submerged inside the aquarium for continuous monitoring of salt levels. Compact design allows for discreet placement and will not detract from the natural beauty of your reef or saltwater aqua scape Can be ...


COCODE Refractometer Salinity ATC Hydrometer Aquarium Dual Scale Optical Salinity Meter Specific Gravity Automatic Temperature Compensation For Pool Sea Water Fish Tank Testing
COCODE Refractometer Salinity ATC Hydrometer Aquarium Dual Scale Optical Salinity Meter Specific Gravity Automatic Temperature Compensation For Pool Sea Water Fish Tank Testing
By COCODE
In Stock
$25.99
$22.99
You Save: 12%

mpn: CWLYDJ001,

4.9 out of 5 stars with 14 reviews
Specifications: Range: 0-10% Salinity; 1.000-1.070g/cm3 Density Resolution: 1ppt Salinity; 0.001 g/cm3 Density Reference temperature: 20°C ATC: 10-30°C Item Length: 20.5cm/8.07in Item Weight :110g/0.24lb Operation Steps: 1.Open daylight plate,clea...


Automatic Temperature Compensation Sea Water Salt Salinity Refractometer for Aquarium, 0% - 10% & 1.0 to 1.070 S.g. Dual Scale Hydrometer By Adeadvancedoptics
Automatic Temperature Compensation Sea Water Salt Salinity Refractometer for Aquarium, 0% - 10% & 1.0 to 1.070 S.g. Dual Scale Hydrometer By Adeadvancedoptics
By Ade Advanced Optics
In Stock
$22.99
$20.00
You Save: 13%

mpn: RHS-10ATC, ean: 0704405061344,

4.7 out of 5 stars with 41 reviews
Design Lightweight aluminum construction Ergonomic, comfortable & easy operation Anti-slip, rugged body with durable & hygiene smooth aluminum grips Translucent bule background Durable High quality all-aluminum body Value 3 year warranty High quality...


Bubblefin Salt Salinity Refractometer - Dual Scale 0% - 10% & 1.0 to 1.070 S.G. Specific Gravity Hydrometer with ATC Automatic Temperature Compensation
Bubblefin Salt Salinity Refractometer - Dual Scale 0% - 10% & 1.0 to 1.070 S.G. Specific Gravity Hydrometer with ATC Automatic Temperature Compensation
By Bubblefin
In Stock
$15.99

ean: 0643845798567,

4.6 out of 5 stars with 88 reviews
Automatic Temperature Compensation Salt Salinity Refractometer - Dual Scale 0% - 10% & 1.0 to 1.070 S.G. Dual Scale Hydrometer. Designed for the safety transportation purpose, the very 1st open of the product case might be tight. Refractometer for se...


Optics Salinity 0-10% Refractometer with ATC, Dual Scale (1.0 to 1.070 Density / 0-100ppt) for Salt Sea Water Aquarium Tank, Marine Industry, with LED light and pipettes
Optics Salinity 0-10% Refractometer with ATC, Dual Scale (1.0 to 1.070 Density / 0-100ppt) for Salt Sea Water Aquarium Tank, Marine Industry, with LED light and pipettes
By TekcoPlus
In Stock
$24.81
$23.90
You Save: 4%

mpn: RETK-77, ean: 0713072682981,

4.2 out of 5 stars with 36 reviews
This is a true seawater or a salt (brine) refractometer preferred by aquarist. Designed to measure seawater (marine aquaria) or very low concentrated salt solutions It can be generally calibrated by fresh water but to ensure accurate salinity measur...


Eowpower Automatic Temperature Compensation Salinity Refractometer for Aquarium Fish Tank Salt Water ATC Hydrometer 0-100ppt/1.0 to 1.070 S.G.
Eowpower Automatic Temperature Compensation Salinity Refractometer for Aquarium Fish Tank Salt Water ATC Hydrometer 0-100ppt/1.0 to 1.070 S.G.
By Eowpower
In Stock
$19.59

mpn: 02-068-001,

4.2 out of 5 stars with 48 reviews
Technical parameters: Size: 195 x 40 x 40mm Package weight:8.4oz Measure Range: 0-100%(0-10%) Salinity Proportion: 1.000-1.070sg Accuracy: 0.001sg(1%) Package Includes: 1 pcs Salinity Refractometer 1 pcs Cleaning Cloth 1 pcs Mini Screwdriver 1 pcs D...


YEME Automatic Temperature Compensation Salinity Refractometer Salt Water Aquarium 0% - 10% & 1.0 to 1.070 S.G.
YEME Automatic Temperature Compensation Salinity Refractometer Salt Water Aquarium 0% - 10% & 1.0 to 1.070 S.G.
By YEME
In Stock
$17.99

mpn: 18, ean: 0616204181478,

4.4 out of 5 stars with 171 reviews
Description: This product is the New Aluminum Salinity Salt Refractometer, which is designed to measure the concentration of saline solution, and the food with the salt, seawater, and briny.It is perfect apply in measuring all kinds of vegetables pic...


AquaticHI Digital PH Meter/Tester, Accurate Water Quality Testing Tool for Drinking Water, Aquariums/Fish Tanks, Swimming Pools, Hydroponics, 0.01 PH Resolution, Range 0-14 PH (Yellow)
AquaticHI Digital PH Meter/Tester, Accurate Water Quality Testing Tool for Drinking Water, Aquariums/Fish Tanks, Swimming Pools, Hydroponics, 0.01 PH Resolution, Range 0-14 PH (Yellow)
By AquaticHI
In Stock
$24.99
$17.99
You Save: 28%
4.2 out of 5 stars with 31 reviews
STOP USING PH TEST STRIPS! THEY DO NOT PROVIDE THE HIGH ACCURACY YOU MAY NEED. HAVING A HARD TIME WITH PH TEST STRIPS BECAUSE YOU ARE COLOR BLIND? NO PROBLEM! GET YOURSELF A HIGHLY ACCURATE DIGITAL PH METER!DescriptionThe AquaticHI PH Meter is an...


PENSON & CO. Salinity Refractometer for Aquarium, Fish Tank Seawater ATC Hydrometer Dual Scale (1.0 to 1.070 S.G.)
PENSON & CO. Salinity Refractometer for Aquarium, Fish Tank Seawater ATC Hydrometer Dual Scale (1.0 to 1.070 S.G.)
By PENSON & CO.
In Stock
$17.99

mpn: ATSAR0211HT, ean: 0691953033537,

4.2 out of 5 stars with 228 reviews
Measure salt water or salinity of water, ideal for aquariums and marine monitoring. 1. Product (Net) size: Length: 7.68"; Diameter: 1.57"; Weight: 4oz.; 2. Material: Aluminium; Color: Black; 3. Salinity Range: 0-100 ppt (0-10%); Specific Gravity (SG)...


Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 Ppt with Automatic Temperature Compensation
Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 Ppt with Automatic Temperature Compensation
By Agriculture Solutions
In Stock
$19.99

mpn: WL0020-ATC, ean: 0710824285742,

4.0 out of 5 stars with 171 reviews
Refractometer for seawater and marine fishkeeping aquarium 0-100 ppt Details : This optical refractometer (salinity meter) has scales in the range of 0 - 100 ppt(0 - 10 %). The reading resolution is 1 ppt. It is designed for the measurement of se...


Pinpoint Orp Controller
Pinpoint Orp Controller
By American Marine
SKU: #11010012
In Stock
$194.90

sku: 11010012, mpn: ORP CONTROLLER,

4.9 out of 5 stars with 7 reviews
The accuracy and reliability of Pinpoint Monitors is now available in a pH and ORP Controller. Large LED display and simple calibration make these the controllers of choice for either ozone or CO2 applications. Units include probe and calibration flu...


Sinotech Hand Held Antifreeze Glycol Battery Refractometer Rha-300atc with Ce Certificate
Sinotech Hand Held Antifreeze Glycol Battery Refractometer Rha-300atc with Ce Certificate
By Sinotech
In Stock
$141.99

mpn: Sin-3056, ean: 0799804050266,

4.0 out of 5 stars with 104 reviews
RHA-300ATC Models are Equipped With °F Unit System. With the Indication of the Temperature WeMay Know the Freezing Point of Either Ethylene Glycol or Propylene Glycol-based Cooling Systems.It Can be Used for Checking the Strength of Electrolyte Sol...


Sinotech Hand Held Two Scales Brix 0-80% Refractometer Rhb0-80
Sinotech Hand Held Two Scales Brix 0-80% Refractometer Rhb0-80
By Sinotech
In Stock
$360.00

ean: 0799804050228,

4.4 out of 5 stars with 41 reviews
RHBO-80 Brix Refractometer Combines Two Separate Brix Ranges in 1 Instrument and Covers a Total Measuring Range of 0-80%. Range 1 Covers 0-50% and Range 2 Covers 50-80%, Allowing This Instrument to be Used on Many Products and Processes. Measuring Ra...


Sinotech Hand Held Lighted Salinity Brine Refractometer Zgrs-10atc 6pcs Per Lot
Sinotech Hand Held Lighted Salinity Brine Refractometer Zgrs-10atc 6pcs Per Lot
By Sinotech
In Stock
$236.45

ean: 0799804050747,

4.3 out of 5 stars with 59 reviews
ZGR series has its own light source. With the built-in light source, it makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it also can use the outside light source to test. It is convenient to replace the batter...


Sinotech Hand Held Lighted Salinity Brine Refractometer Zgrs-28atc 6pcs Per Lot
Sinotech Hand Held Lighted Salinity Brine Refractometer Zgrs-28atc 6pcs Per Lot
By Sinotech
In Stock
$236.95

mpn: ZGRS-28ATC, ean: 0799804050754,

4.8 out of 5 stars with 76 reviews
ZGR series has its own light source. With the built-in light source, it makes more convenient to use when in a Dark or Dim room or when doing wide-field work.And it also can use the outside light source to test. It is convenient to replace the batter...


Sinotech Hand Held Salinity Refractometer Rhsn-10atc Built-in Calibration Knob 6pcs Per Lot
Sinotech Hand Held Salinity Refractometer Rhsn-10atc Built-in Calibration Knob 6pcs Per Lot
By Sinotech
In Stock
$197.45

ean: 0799804050457,

4.5 out of 5 stars with 282 reviews
RHSN-10ATC is an upgraded version of RHS-10ATC with an additional features of BUILT-IN CALIBRATION KNOB, has much LIGHTER WEIGHT, and LONGER. Salinity Refractometer is designed for testing the concentration of salt water and brine and used for qualit...


Sinotech Hand Held Antifreeze Refractometer Rhan-200atc Built-in Calibration Knob 6pcs Per Lot
Sinotech Hand Held Antifreeze Refractometer Rhan-200atc Built-in Calibration Knob 6pcs Per Lot
By Sinotech
In Stock
$197.95

mpn: RHAN-200ATC, ean: 0799804050488,

4.5 out of 5 stars with 115 reviews
RHAN-200ATC is an upgraded version of RHA-200ATC with an additional features of BUILT-IN CALIBRATION KNOB, has much LIGHTER WEIGHT, and LONGER Product's Instroduction: The models have only one unit system: °C. With the indication of the percenta...



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