hygger Small Submersible Aquarium Heater 100W Mini Betta Fish Tank Heater with LED Display Adjustable Temperature for 10-20 Gallon Freshwater Saltwater Coral Reef Tanks

Product description

Digital Display

Let you monitor water tempeature at a glance

DUAL PROTECTION KEEP YOUR FISH SAFE

Error code “EE” means water temperature exceed 97.

Error code “Er” means water level dips too low, you have to place the heater deeper.

Perfect for Saltwater Aquarium! Premium Heating Element

Protective guard protects fish from getting touch with heating element

4 Size Available

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Customer Reviews

4.3 out of 5 stars 260

4.3 out of 5 stars 260

4.3 out of 5 stars 260

4.3 out of 5 stars 920

3.6 out of 5 stars 10

4.3 out of 5 stars 16

3.8 out of 5 stars 29

Price

$18.99$18.99

$20.89$20.89

$21.84$21.84

$17.99$17.99

$25.19$25.19

$28.49$28.49

$48.99$48.99

Dimension

4.3”x 1.8”x 0.9”

4.3”x 1.8”x 0.9”

4.3”x 1.8”x 0.9”

4.5”x 2.6”x 1.4”

5”x 3”x 1.1”

5”x 3”x 1.1”

10.6″x3.3″x1″

For Fish Tank

2-5 gal

5-10 gal

10-20 gal

1-6.5 gal

25-35 gal

35-45 gal

80-220 gal

Temp Range

59°F to 93°F

59°F to 93°F

59°F to 93°F

63°F to 94°F

59°F to 93°F

59°F to 93°F

59°F to 93°F

Power Cord Length

6.5 ft

6.5 ft

6.5 ft

6.5 ft

6.8 ft

6.8 ft

—

Indicator Light

✔

✔

✔

✔

✔

✔

✔

Package Dimensions ‏ : ‎ 6.42 x 5.24 x 1.85 inches; 10.23 ounces
Date First Available ‏ : ‎ August 14, 2025
Manufacturer ‏ : ‎ hygger
ASIN ‏ : ‎ B0FC2DDDXC
Best Sellers Rank: #22,996 in Pet Supplies (See Top 100 in Pet Supplies) #35 in Aquarium Heaters
Customer Reviews: 4.3 4.3 out of 5 stars (260) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Easy To Hide Compact Design — Slim flat profile mini aquarium heater measures 4.3”x 1.8”x 0.9”, which is quiet space saving and easy to hide behind filter/wood/rock with two strong suction cups mount. 100W aquarium heater is suitable for 10-20 gallon freshwater/saltwater aquariums, turtle tanks, betta tanks and planted tanks
Convenient Digital Display — LED digital readout is convenient and accurate, displaying real time water temperature and indicator light. It will be red when heating, green light when the proper temperature has been reached. Allows you monitor aquarium water temperature at any time
Adjustable Temperature & Memory Function– Betta fish heater with external control allows you quick set temperature without getting hands wet especially in winter, adjustable wide temperature range of 59°F to 93°F in 1-degree increments. Memory function that remembers last setting, so you don’t have to reset temperature after power failure
Safety Shut Off Protection — small fish tank heater would automatically turn it off and flashing error code if the heater is not fully submerged, which ensure it doesn’t overheat and cause harm to your livestock. Shatterproof plastic guard protects fish/turtle from impact and making contact
Safe Rugged Construction — Built in shatterproof quartz tube wrapped with two heating element mica plate and nickel wire, along with high-impact plastic housing, hygger fish tank heater ensures the safety of your pets while maintaining proper, constant temperature