Aquarium Heaters & Thermometers For New Fish

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LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 2 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 3 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 4 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 5 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 6 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 7 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 8 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 9 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 2 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 3 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 4 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 5 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 6 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 7 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 8 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 9 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 2 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 3 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 4 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 5 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 6 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 7 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 8 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 9 of 9
Slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 2 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 3 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 4 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 5 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 6 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 7 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 8 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 9 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 2 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 3 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 4 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 5 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 6 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 7 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 8 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 9 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 1 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 2 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 3 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 4 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 5 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 6 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 7 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 8 of 9
LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in, 300-watt slide 9 of 9

LvLrister Titanium Thermostat with Intelligent LED Display Submersible Aquarium Heater, 12.8-in...

Rated 4.6 out of 5 stars
105
$23.99 Chewy Price
$35.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

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Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 3 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 4 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 5 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 6 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 7 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 8 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 3 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 4 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 5 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 6 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 7 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 8 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 3 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 4 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 5 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 6 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 7 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 8 of 8
Slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 3 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 4 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 5 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 6 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 7 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 8 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 3 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 4 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 5 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 6 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 7 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 8 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 1 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 2 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 3 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 4 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 5 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 6 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 7 of 8
Penn-Plax Cascade Heat Preset Submersible Aquarium Heater, 10-in, 200-watt slide 8 of 8

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

Rated 4.2 out of 5 stars
98
$18.99 Chewy Price
$42.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Underwater Treasures Floating Glass Fish Thermometer

Rated 4.4 out of 5 stars
247
$1.75 Chewy Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

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Fluval M 100Watt Submersible Fish Heater slide 1 of 8
Fluval M 100Watt Submersible Fish Heater slide 2 of 8
Fluval M 100Watt Submersible Fish Heater slide 3 of 8
Fluval M 100Watt Submersible Fish Heater slide 4 of 8
Fluval M 100Watt Submersible Fish Heater slide 5 of 8
Fluval M 100Watt Submersible Fish Heater slide 6 of 8
Fluval M 100Watt Submersible Fish Heater slide 7 of 8
Fluval M 100Watt Submersible Fish Heater slide 8 of 8
Fluval M 100Watt Submersible Fish Heater slide 1 of 8
Fluval M 100Watt Submersible Fish Heater slide 2 of 8
Fluval M 100Watt Submersible Fish Heater slide 3 of 8
Fluval M 100Watt Submersible Fish Heater slide 4 of 8
Fluval M 100Watt Submersible Fish Heater slide 5 of 8
Fluval M 100Watt Submersible Fish Heater slide 6 of 8
Fluval M 100Watt Submersible Fish Heater slide 7 of 8
Fluval M 100Watt Submersible Fish Heater slide 8 of 8
Fluval M 100Watt Submersible Fish Heater slide 1 of 8
Fluval M 100Watt Submersible Fish Heater slide 2 of 8
Fluval M 100Watt Submersible Fish Heater slide 3 of 8
Fluval M 100Watt Submersible Fish Heater slide 4 of 8
Fluval M 100Watt Submersible Fish Heater slide 5 of 8
Fluval M 100Watt Submersible Fish Heater slide 6 of 8
Fluval M 100Watt Submersible Fish Heater slide 7 of 8
Fluval M 100Watt Submersible Fish Heater slide 8 of 8

Fluval M 100Watt Submersible Fish Heater

Rated 4.6 out of 5 stars
25
$32.99 Chewy Price
$35.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

SunGrow Betta & Turtle Submersible Aquarium Tank Water Heater with Thermostat, 10-watt, up to 5...

Rated 4.2 out of 5 stars
175
$8.82 Chewy Price
$13.99 List Price

Free 1-3 day delivery on first-time orders over $35
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Eheim Thermocontrol E Fish Aquarium Heater, 300 W

Rated 4.3 out of 5 stars
35
$50.93 Chewy Price
$69.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

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

Rated 4.1 out of 5 stars
127
$15.27 Chewy Price
$18.89 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aquael Platinium 150W Glass Heater

Rated 4.6 out of 5 stars
19
$33.78 Chewy Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

New

JBJ Aquarium Truetemp Titanium Aquarium Heater, Black, 800-watt

$141.00 Chewy Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Fluval Electronic Aquarium Heater, 300-watt

Rated 4 out of 5 stars
97
$56.28 Chewy Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Tetra HT30 Submersible Aquarium Heater & Electronic Thermosat, 100-watt

Rated 4 out of 5 stars
101
$17.99 Chewy Price
$22.59 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

H2Pro Titanium Aquarium Heater, 200-watt

Rated 4.2 out of 5 stars
10
$52.60 Chewy Price
$64.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Marina Floating Thermometer with Suction Cup for Aquariums

Rated 4.1 out of 5 stars
253
$3.99 Chewy Price
$4.48 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval E200 Electronic Fish Aquarium Heater, 200-watt

Rated 5 out of 5 stars
1
$49.61 Chewy Price
$64.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Fluval Wireless 2-in-1 Digital Fish Thermometer

Rated 4.1 out of 5 stars
25
$21.99 Chewy Price
$25.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 25 Adjustable Fish Heater

Rated 4 out of 5 stars
7
$19.95 Chewy Price
$35.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aqueon Glass Adjustable Aquarium Heater, 50-watt

Rated 3.8 out of 5 stars
91
$36.99 Chewy Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Fluval Submersible Glass Aquarium Heater, 50-watt

Rated 4 out of 5 stars
57
$30.99 Chewy Price
$34.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Aquael Ultra 200W Aquarium Heater

Rated 4 out of 5 stars
15
$54.99 Chewy Price
$92.87 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Cobalt Aquatics Electronic Neo-Therm Pro Submersible Aquarium Heater, 25-Watt

Rated 4 out of 5 stars
56
$47.99 Chewy Price
$87.67 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Fluval P10 Pre-Set Aquarium Fish Heater

Rated 4.3 out of 5 stars
15
$17.06 Chewy Price
$26.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval M 200Watt Submersible Fish Heater

Rated 4.4 out of 5 stars
22
$36.99 Chewy Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Seapora SmartTemp Dual Digital Aquarium Heater, 200-watt

Rated 5 out of 5 stars
2
$58.61 Chewy Price
$76.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Hydor Micro & Mini Aquarium Slim Fish Heater, Black, 15-watt

Rated 4.3 out of 5 stars
9
$15.29 Chewy Price

Free delivery on first-time orders over $35
Free 365-day returns

Lifegard Pre-Set Quartz Glass Heater Electronic Control, 25 watt

Rated 4 out of 5 stars
9
$13.59 Chewy Price
$20.51 List Price

Free delivery on first-time orders over $35
Free 365-day returns

Fluval M 300Watt Submersible Fish Heater

Rated 4.2 out of 5 stars
30
$38.99 Chewy Price
$39.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

GloFish Submersible Fish Heater, 50-watts

Rated 4.3 out of 5 stars
20
$17.47 Chewy Price
$22.49 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 100 Adjustable Fish Heater

Rated 4 out of 5 stars
4
$38.72 Chewy Price
$42.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Fluval M 150Watt Submersible Fish Heater

Rated 4.1 out of 5 stars
7
$34.99 Chewy Price
$35.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Marina 10.5-in Submersible Fish Heater, 150-Watts

Rated 4.2 out of 5 stars
6
$27.99 Chewy Price
$39.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Hydor Theo Aquarium Fish Heater, Black, 150-watt

Rated 4.4 out of 5 stars
8
$31.79 Chewy Price
$47.99 List Price

Free delivery on first-time orders over $35
Free 365-day returns

Lifegard Adjustable Quartz Glass Heater Electronic Control, 300 watt

Rated 5 out of 5 stars
5
$37.49 Chewy Price
$37.68 List Price

Free delivery on first-time orders
Free 365-day returns

OASE Indoor Aquatics HeatUp 300 Adjustable Fish Heater

Rated 5 out of 5 stars
2
$41.59 Chewy Price
$56.99 List Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

Seapora Quartz Aquarium Heater, 100-watt

Rated 4 out of 5 stars
5
$21.36 Chewy Price
$21.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

OASE Indoor Aquatics HeatUp 200 Adjustable Fish Heater

Rated 4.5 out of 5 stars
2
$32.89 Chewy Price
$48.99 List Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

JBJ Aquarium Arctica Titanium Auqarium Chiller, 1/4-hp

Rated 5 out of 5 stars
3
$965.22 Chewy Price

Free delivery on first-time orders
Free 365-day returns

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