Freshwater Aquarium Heaters & Thermometers

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Freshwater
Freshwater

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Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 2
Slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 2
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 2

Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt

Rated 4.6 out of 5 stars
33
$20.53 Chewy Price
$33.99 List Price
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Underwater Treasures Floating Glass Fish Thermometer

Rated 4.5 out of 5 stars
58
$1.75 Chewy Price
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Slide 1 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 1 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 2 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 3 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 4 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 5 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 1 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 2 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 3 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 4 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 5 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 1 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 2 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 3 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 4 of 5
Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt slide 5 of 5

Tetra HT10 Submersible Aquarium Heater & Electronic Thermostat, 50-watt

Rated 3.6 out of 5 stars
76
$13.97 Chewy Price
$19.99 List Price
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Slide 1 of 2
Eheim Jager Thermostat Aquarium Heater, 150- watt slide 1 of 2
Eheim Jager Thermostat Aquarium Heater, 150- watt slide 2 of 2
Eheim Jager Thermostat Aquarium Heater, 150- watt slide 1 of 2
Eheim Jager Thermostat Aquarium Heater, 150- watt slide 2 of 2
Eheim Jager Thermostat Aquarium Heater, 150- watt slide 1 of 2
Eheim Jager Thermostat Aquarium Heater, 150- watt slide 2 of 2

Eheim Jager Thermostat Aquarium Heater, 150- watt

Rated 4.1 out of 5 stars
101
$32.11 Chewy Price
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Aqueon Preset Aquarium Heater, 100-watt

Rated 3.4 out of 5 stars
258
$17.39 Chewy Price
$25.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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SunGrow Betta & Turtle Submersible Aquarium Tank Water Heater with Thermostat, 10-watt, up to 5...

Rated 3.9 out of 5 stars
70
$13.99 Chewy Price
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Free 1-3 day delivery on first-time orders over $35
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Fluval M 300Watt Submersible Fish Heater

Rated 4.3 out of 5 stars
10
$38.99 Chewy Price
$39.99 List Price
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Free 1-3 day delivery on first-time orders
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Marineland Precision Heater, 150 Watt

Rated 2.4 out of 5 stars
67
$21.90 Chewy Price
$39.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Cobalt Aquatics Electronic Neo-Therm Pro Submersible Aquarium Heater, 150-Watt

Rated 4.1 out of 5 stars
38
$68.81 Chewy Price
$117.81 List Price
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Free 1-3 day delivery on first-time orders
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Marina 8.5-in Submersible Fish Heater, 100-Watts

Rated 5 out of 5 stars
2
$36.99 Chewy Price
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Free 1-3 day delivery on first-time orders
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OASE Indoor Aquatics HeatUp 50 Adjustable Fish Heater

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Rated 4.5 out of 5 stars
2
$32.44 Chewy Price
$35.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Coralife Battery Operated Digital Thermometer for Aquariums

Rated 4.8 out of 5 stars
26
$8.02 Chewy Price
$12.49 List Price
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Free 1-3 day delivery on first-time orders over $35
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Fluval Submersible Glass Aquarium Heater, 50-watt

Rated 3.8 out of 5 stars
45
$30.99 Chewy Price
$34.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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GloFish Submersible Fish Heater, 50-watts

Rated 3.6 out of 5 stars
8
$15.97 Chewy Price
$20.59 List Price
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Free 1-3 day delivery on first-time orders over $35
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Aqueon Pro Aquarium Heater, 300 watt

Rated 3.6 out of 5 stars
94
$54.95 Chewy Price
$69.99 List Price
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SunGrow Betta Fish Thermometer Sticker, Temperature Strip for Small Aquarium & Reptiles Tank

Rated 3.8 out of 5 stars
31
$4.99 Chewy Price
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Free 1-3 day delivery on first-time orders over $35
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Marina Floating Thermometer with Suction Cup for Aquariums

Rated 3.9 out of 5 stars
181
$4.48 Chewy Price
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Penn-Plax AquaLIFE Therma-Temp Digital Aquarium Thermometer, 2-in

Rated 3.4 out of 5 stars
32
$2.49 Chewy Price
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Free 1-3 day delivery on first-time orders over $35
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Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt

Rated 2.6 out of 5 stars
15
$18.54 Chewy Price
$28.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Marina 10.5-in Submersible Fish Heater, 300-Watts

Rated 3 out of 5 stars
2
$44.99 Chewy Price
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Free 1-3 day delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics HeatUp 400 Adjustable Fish Heater

By
$59.99 Chewy Price
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Free 1-3 day delivery on first-time orders
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Marina Betta Submersible Aquarium Heater

Rated 4 out of 5 stars
62
$13.29 Chewy Price
$17.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Fluval Wireless 2-in-1 Digital Fish Thermometer

Rated 4.6 out of 5 stars
7
$19.93 Chewy Price
$25.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Eheim Thermocontrol E Fish Aquarium Heater, 150 W

Rated 3.9 out of 5 stars
12
$47.99 Chewy Price
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Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in

Rated 3.1 out of 5 stars
16
$25.03 Chewy Price
$35.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Hydor In-Line External Hose Aquarium Heater, Black, 300-watt, 5/8-in

$92.99 Chewy Price
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H2Pro Titanium Aquarium Heater, 300-watt

Rated 3.7 out of 5 stars
6
$67.30 Chewy Price
$74.99 List Price
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Free 1-3 day delivery on first-time orders
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Fluval Electronic Aquarium Heater, 300-watt

Rated 3.6 out of 5 stars
48
$49.97 Chewy Price
$54.99 List Price
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Free 1-3 day delivery on first-time orders
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Marina 6-in Submersible Fish Heater, 50-Watts

Rated 3.4 out of 5 stars
5
$23.97 Chewy Price
$32.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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OASE Indoor Aquatics HeatUp 25 Adjustable Fish Heater

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Rated 4 out of 5 stars
2
$29.86 Chewy Price
$33.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Aquatop Submersible Glass Aquarium Heater, 150-watt

Rated 3.6 out of 5 stars
90
$25.99 Chewy Price
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Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval M 150Watt Submersible Fish Heater

$34.99 Chewy Price
$35.99 List Price
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Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Penn-Plax 10W Plastic Safe Aqiuarium Heater, 4-in

Rated 3.3 out of 5 stars
3
$13.10 Chewy Price
$16.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Cobalt Aquatics Neo-Glass Submersible Aquarium Heater, 300-watt

Rated 2.8 out of 5 stars
10
$33.10 Chewy Price
$51.41 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Aqueon Mini Aquarium Heater, 2-gal, 5 watt

Rated 3.5 out of 5 stars
63
$10.64 Chewy Price
$16.99 List Price
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Free 1-3 day delivery on first-time orders over $35
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Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 7-in, 50-watt

Rated 3.9 out of 5 stars
9
$18.99 Chewy Price
$28.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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