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Aquarium Thermometers

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$7.99 - $48.99
$7.99 - $48.99
$7.99
$5.99 - $33.99
$5.99 - $33.99
$5.99

Zoo Med Digital Aquarium Thermometer

Zoo Med
21 in stock

The Zoo Med Aquatic Digital Thermometer provides accurate readings of your aquarium environment, and features a digital display for quick readings,...

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$7.99 - $48.99
$7.99 - $48.99
$7.99
$5.99 - $33.99
$5.99 - $33.99
$5.99
Save up to 31% Save %
$2.96 - $17.23
$2.96 - $17.23
$2.96 - $17.23
$2.96

Rio Stick-On Thermometer Strip

Rio
Only 5 left!

The Rio Stick-On Digital Aquarium Thermometer is a great way to keep an eye on your aquariums temperature. This thermometer strip is temperature se...

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$2.96 - $17.23
$2.96 - $17.23
$2.96 - $17.23
$2.96
$20.82 - $40.41
$20.82 - $40.41
$20.82 - $40.41
$20.82

Rio Mini LCD Aquarium Thermometer

Rio
23 in stock

The Rio Mini LCD Thermometer offers reliable readings and a compact design.Easy to read LCD display.Safe for use in Freshwater and Saltwater Aquari...

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$20.82 - $40.41
$20.82 - $40.41
$20.82 - $40.41
$20.82
$4.68 - $27.18
$4.68 - $27.18
$4.68 - $27.18
$4.68

Rio Glass Floating Thermometer for Aquariums

Rio
16 in stock

The Rio Glass Floating Thermometer is easy to read and reliable! Perfect for aquariums and reads between 35-110 Degrees F.Floating.Made of durable ...

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$4.68 - $27.18
$4.68 - $27.18
$4.68 - $27.18
$4.68
$6.22 - $36.22
$6.22 - $36.22
$6.22 - $36.22
$6.22

Rio Floating Glass Dual Hydrometer Thermometer

Rio
115 in stock

The Rio Floating Glass Dual Hydrometer and Thermometer provides accurate measurements of specific gravity, salinity, and temperature in marine aqua...

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$6.22 - $36.22
$6.22 - $36.22
$6.22 - $36.22
$6.22
$3.60 - $21.01
$3.60 - $21.01
$3.60 - $21.01
$3.60

Penn Plax Therma-Temp Stainless Steel Thermometer

Penn Plax
400 in stock

The Penn Plax Therma-Temp Stainless Steel Thermometer is a small stainless steel thermometer that hangs on the rim of most aquariums. Effectively m...

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$3.60 - $21.01
$3.60 - $21.01
$3.60 - $21.01
$3.60
$3.31 - $19.27
$3.31 - $19.27
$3.31 - $19.27
$3.31

Penn Plax Therma-Temp Full-Range Digital Thermometer

Penn Plax
37 in stock

The Penn Plax Therma-Temp Full-Range Digital Thermometer accurately measures aquarium temperature. Contains clear and easy to read numbers, fahrenh...

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$3.31 - $19.27
$3.31 - $19.27
$3.31 - $19.27
$3.31
$3.24 - $37.71
$3.24 - $37.71
$3.24 - $37.71
$3.24

Penn Plax Therma-Temp Floating Thermometer with Suction Cup

Penn Plax
95 in stock

The Penn Plax Therma-Temp Floating Thermometer with Suction Cup is an all glass thermometer with a suction cup mount. The Penn Plax Therma-Temp Flo...

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$3.24 - $37.71
$3.24 - $37.71
$3.24 - $37.71
$3.24
$2.80 - $32.67
$2.80 - $32.67
$2.80 - $32.67
$2.80

Penn Plax Digital Thermometer Small Strip 2"

Penn Plax
9 in stock

Most tropical fish have specific temperature requirements in order to thrive. The Penn-Plax AquaLIFE Therma-Temp Digital Aquarium Thermometer makes...

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$2.80 - $32.67
$2.80 - $32.67
$2.80 - $32.67
$2.80
$3.36 - $29.33
$3.36 - $29.33
$3.36 - $29.33
$3.36

Marina Stainless Steel Aquarium Thermometer

Marina
48 in stock

The Hagen Marina Stainless Steel Thermometer provides accurate, easy to read temperature readings for fresh and saltwater aquariums. A safety zone ...

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$3.36 - $29.33
$3.36 - $29.33
$3.36 - $29.33
$3.36
$3.36 - $29.33
$3.36 - $29.33
$3.36 - $29.33
$3.36

Marina Plastic Aquarium Thermometer

Marina
36 in stock

Hagen Marinas Plastic Aquarium Thermometer is for fresh and saltwater use. Accurate and easy to read, with a safety zone indicator to protect most ...

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$3.36 - $29.33
$3.36 - $29.33
$3.36 - $29.33
$3.36
$2.65 - $23.18
$2.65 - $23.18
$2.65 - $23.18
$2.65

Marina LCD 5" LongDigital Aquarium Thermometer 66 to 88° F

Marina
Only 4 left!

Marina Minerva Digital Thermometer is an easy-to-read liquid crystal display (LCD) aquarium thermometer that is reliably accurate to plus-or-minus ...

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$2.65 - $23.18
$2.65 - $23.18
$2.65 - $23.18
$2.65
$1.86 - $21.64
$1.86 - $21.64
$1.86 - $21.64
$1.86

Marina LCD 3.4" Long Digital Aquarium Thermometer 72 to 86° F

Marina
10 in stock

The Marina LCD Aquarium Thermometer features an easy-to-read liquid crystal display (LCD) that is reliably accurate to plus-or-minus 1°F, meaning n...

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$1.86 - $21.64
$1.86 - $21.64
$1.86 - $21.64
$1.86
$2.26 - $26.37
$2.26 - $26.37
$2.26 - $26.37
$2.26

Marina LCD 1.75" Long Digital Aquarium Thermometer 64 to 86° F

Marina
24 in stock

Hagen Marina Meridian Thermometer is an easy-to-read liquid crystal display (LCD) aquarium thermometer that is reliably accurate to plus-or-minus 1...

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$2.26 - $26.37
$2.26 - $26.37
$2.26 - $26.37
$2.26
$2.02 - $23.62
$2.02 - $23.62
$2.02 - $23.62
$2.02

Marina LCD 1.75" Digital Aquarium Thermometer 72 to 86° F

Marina
144 in stock

The Marina LCD Digital Aquarium Thermometer is an easy-to-read liquid crystal display (LCD) aquarium thermometer that is reliably accurate to plus-...

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$2.02 - $23.62
$2.02 - $23.62
$2.02 - $23.62
$2.02
$2.26 - $26.37
$2.26 - $26.37
$2.26 - $26.37
$2.26

Marina LCD 0.6" Long Digital Horizontal Aquarium Thermometer 68 to 86° F

Marina
7 in stock

The Marina LCD Digital Aquarium Thermometer features an easy-to-read liquid crystal display (LCD) that is reliably accurate to plus-or-minus 1° F: ...

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$2.26 - $26.37
$2.26 - $26.37
$2.26 - $26.37
$2.26
$3.71 - $21.61
$3.71 - $21.61
$3.71 - $21.61
$3.71

Marina Large Floating Aquarium Thermometer

Marina
31 in stock

Hagen Large Floating Thermometer is for fresh and salt water. Accurate and easy to read. Safety zone indicator for most tropical fish. Protects fis...

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$3.71 - $21.61
$3.71 - $21.61
$3.71 - $21.61
$3.71
$1.76 - $27.20
$1.76 - $27.20
$1.76 - $27.20
$1.76

Marina Aquarium Standing Thermometer

Marina
29 in stock

The Hagen Marina Standing Aquarium Thermometer is an accurate, easy to read temperature indicator for fresh and saltwater fish tanks. Includes a sa...

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$1.76 - $27.20
$1.76 - $27.20
$1.76 - $27.20
$1.76
$3.03 - $20.60
$3.03 - $20.60
$3.03 - $20.60
$3.03

JW Pet Fusion Smart Temp Aquarium Thermometer

JW Pet
6 in stock

We are proud to introduce the NEW SmartTemp Thermometer. This unique design combines a thermometer with a magnet. Attach to the inside of the tank ...

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$3.03 - $20.60
$3.03 - $20.60
$3.03 - $20.60
$3.03
$10.53 - $40.88
$10.53 - $40.88
$10.53 - $40.88
$10.53

Coralife Battery-Operated Digital Thermometer for Aquariums and Terrariums

Coralife
109 in stock

The Coralife and ESU Reptile Battery Operated Digital Thermometer can be used to obtain accurate temperatures in aquariums or reptile terrariums. R...

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$10.53 - $40.88
$10.53 - $40.88
$10.53 - $40.88
$10.53