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ADA NA Thermometer 10mm (J-10WH) ADA NA Thermometer 10mm (J-10WH)
Price Only: $23.95
3 in stock!
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ADA NA Thermometer 12mm (J-12WH) ADA NA Thermometer 12mm (J-12WH)
Price Only: $27.50
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(1)
ADA NA Thermometer 5mm (J-05WH) ADA NA Thermometer 5mm (J-05WH)
Price Only: $17.49
3 in stock!
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ADA NA Thermometer 6mm (J-06WH) ADA NA Thermometer 6mm (J-06WH)
Price Only: $17.49
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ADA NA Thermometer 8mm (J-08WH) ADA NA Thermometer 8mm (J-08WH)
Price Only: $18.49
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ADA Thermometer - Easy Read ADA Thermometer - Easy Read
Was: $4.95
Price Only: $3.00
7 in stock!
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Digital External LCD Thermometer Digital External LCD Thermometer
Price Only: $14.95
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Floating Thermometer Sub Hydrometer Floating Floating Thermometer Sub Hydrometer Floating
Price Only: $9.90
14 in stock!
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Marina Aqua-Minder Digital Thermometer Marina Aqua-Minder Digital Thermometer
Price Only: $39.95
3 in stock!
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Marina Flexible Coil Brush Hose Cleaner Marina Flexible Coil Brush Hose Cleaner
Price Only: $9.90
6 in stock!
(1)
Pet Worx Glass Thermometer T-07 15cm Long Pet Worx Glass Thermometer T-07 15cm Long
Price Only: $2.95
(Out of Stock)
(4)
Pet Worx Glass Thermometer T-08 12cm Long Pet Worx Glass Thermometer T-08 12cm Long
Price Only: $2.49
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(6)
Red Sea Seawater Refractometer Red Sea Seawater Refractometer
Price Only: $122.60
1 in stock!
(2)
Serenity Digital In Tank Submersible Thermometer Serenity Digital In Tank Submersible Thermometer
Price Only: $10.95
(Out of Stock)
(4)
Serenity Seawater Refractometer Serenity Seawater Refractometer
Price Only: $74.95
3 in stock!
Serenity Seawater Refractometer with LED lit Serenity Seawater Refractometer with LED lit
Price Only: $89.96
(Out of Stock)
   
 

Aquarium Thermometers & Salinity Refractometers

Having a quality aquarium thermometer is important to anyone keeping fish, as fish require life in an environment that's kept within a specific temperature range. Here you'll find an array of fish tank thermometer options, including submersible thermometer models and those that deliver both internal water and external ambient air temperature. A quality digital aquarium thermometer should be extremely accurate and do a good job of protecting your fish from suffering the ill effects of unhealthy temperature variances.

Other helpful equipment found here on this page include a number of aquarium refractometer (or salinity monitor) units that are essential in keeping track of your aquarium’s dissolved salt level. A saltwater hydrometer is also designed to measure a tank water's specific gravity and salt level, but saltwater refractometers are most accurate. Tools such as thermometers and salinity refractometers/hydrometers are critical in keeping a healthy saltwater tank.