Saltwater Aquarium Heaters

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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
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
103
$23.99 Chewy Price
$35.99 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
246
$1.75 Chewy Price

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

Slide 1 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 1 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 2 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 3 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 4 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 5 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 6 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 7 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 8 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 9 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 1 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 2 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 3 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 4 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 5 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 6 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 7 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 8 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 9 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 1 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 2 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 3 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 4 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 5 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 6 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 7 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 8 of 9
Aqueon Preset Aquarium Heater, 100-watt slide 9 of 9

Aqueon Preset Aquarium Heater, 100-watt

Rated 3.6 out of 5 stars
325
$20.82 Chewy Price
$32.99 List Price

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

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 4.1 out of 5 stars
125
$15.27 Chewy Price
$18.89 List Price

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

Eheim Thermocontrol E Fish Aquarium Heater, 300 W

Rated 4.3 out of 5 stars
35
$51.09 Chewy Price
$69.99 List Price

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

Aquael Platinium 250W Glass Heater

Rated 4.6 out of 5 stars
19
$33.99 Chewy Price
$35.96 List Price

Free 1-3 day delivery on first-time orders over $35
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 Electronic Aquarium Heater, 300-watt

Rated 4 out of 5 stars
96
$58.23 Chewy Price

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

SunGrow Betta Fish Thermometer Sticker, Temperature Strip for Small Aquarium & Reptiles Tank

Rated 4 out of 5 stars
86
$2.99 Chewy Price
$4.99 List Price

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

Aqueon Pro Aquarium Heater, 150 watt

Rated 3.8 out of 5 stars
116
$59.99 Chewy Price
$78.95 List Price

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

Marineland Precision Heater, 300 Watt

Rated 3.2 out of 5 stars
111
$41.47 Chewy Price
$51.79 List 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

Tetra HT55 Submersible Aquarium Heater & Electronic Thermostat, 200-watt

Rated 3.9 out of 5 stars
35
$27.97 Chewy Price
$34.99 List Price

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

Aqueon Aquatic Flat Heater, 15-watt

Rated 3.7 out of 5 stars
52
$16.99 Chewy Price
$20.99 List Price

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

Aqueon Mini Aquarium Heater, 2-gal, 5 watt

Rated 3.7 out of 5 stars
87
$16.99 Chewy Price

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

HelloReef Stick on Aquarium Thermometer

Rated 4 out of 5 stars
4
$4.99 Chewy Price

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

Tetra HT40 Submersible Aquarium Heater & Electronic Thermostat, 150-watt

Rated 3.2 out of 5 stars
19
$23.97 Chewy Price
$29.99 List Price

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

Aquatop Nano Aquarium Thermostat Heater, 15-watt

Rated 2.9 out of 5 stars
15
$12.99 Chewy Price
$25.99 List Price

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

Coralife Deep Six Aquarium Hydrometer

Rated 3 out of 5 stars
7
$13.99 Chewy Price
$14.99 List Price

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

JBJ Aquarium Arctica Titanium Auqarium Chiller, 1/10-hp

Rated 5 out of 5 stars
2
$696.34 Chewy Price

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

Hydor Theo Shatterproof Aquarium Heater, 50-watt

Rated 3.5 out of 5 stars
42
$35.28 Chewy Price
$38.95 List Price

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

Zoo Med BettaTherm Mini Size Betta Bowl Heater

Rated 2.3 out of 5 stars
11
$21.43 Chewy Price

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

Fluval Sea Aquarium Hydrometer, Medium

Rated 2.5 out of 5 stars
6
$9.82 Chewy Price
$14.99 List Price

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

Out of Stock

Eheim Jager Thermostat Aquarium Heater, 200-watt

Rated 4.3 out of 5 stars
173

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

Out of Stock

Aquatop Floating Glass Thermometer with Suction Cup Mount

Rated 1 out of 5 stars
1

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

Category

Aquarium & Fish Tank Heaters

Aquarium & Fish Tank Thermometers

Product Type

Aquarium Type

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7 Brands are shown below

Fish Type

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