hygger ECO Precise Aquarium Submersible Heater, 200W for 20-40 Gallon Fish Tank Heater with Digital Display Adjustable Controller for Saltwater Freshwater

Product description

5 Sizes Available

hygger Precise Aquarium Submersible Heater

50 Watt: for 5-10 gallon small tank

100 Watt: for 10-20 gallon tank

200 Watt: for 20-40 gallon tank

300 Watt: for 40-60 gallon tank

500 Watt: for 55-100 gallon tank

Two Heating Modes Precision Warmth Mode

In Precision Warmth Mode, heating will be activated when the temperature drops by 0.5°F (0.5°C) below the set temperature.

Tips: The system defaults to precise mode; no need to operate. Just set the target temperature.

Energy-Saving Mode

In ECO Mode, heating will be activated when the temperature drops by 1°F (1°C) below the set temperature.

Tips: When eco mode is on, the corresponding icon will appear on the display. For details, please refer to the user manual.

Intelligent Multi in One Controller

Easy to set and monitor the water temperature accurately.With a warning alarm function when the heater malfunction.

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More Detail Child Lock Protection

You have to hold the button for 3 seconds before entering any change mode to prevent children/mistakenly touching.

Power-Off Memoery Function

The controller also remembers your settings in case of a power failure, which saves your time and energy.

US Standard Plug

7.23ft long power cord.

Explosion-Proof Quart Glass

Uses corrosion-resistant nickel-chromium wireMagnesium powder as the heat-conducting medium

Proper Placement

Place the heater near the water flow; this helps distribute the heat evenly across the tank.

Suitable For Saltwater and Freshwater
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Maintenance Tips & Troubleshooting

Clean Regularly: Wipe the heater with a soft cloth every 2-4 weeks. This prevents scale buildup, which can lower its efficiency.Check for Damage: Look for cracks or other damage. If you find any, replace the heater right away.Water Changes: Unplug the heater when changing water if the level drops below its minimum immersion line. If you need to remove it, switch it off 10 minutes beforehand to let it cool down.Place: Make sure the heater rod does not touch the sand or gravel on the tank bottom because the heat difference will likely crack your heater glass.Must be: The heater element must always be completely submerged at least 2 inches underwater to prevent water evaporation and dry burning.

Package Dimensions ‏ : ‎ 11.46 x 3.78 x 3.23 inches; 15.84 ounces
Item model number ‏ : ‎ hg253
Date First Available ‏ : ‎ August 22, 2025
Manufacturer ‏ : ‎ hygger
ASIN ‏ : ‎ B0FNC8Y9P6
Best Sellers Rank: #54,217 in Pet Supplies (See Top 100 in Pet Supplies) #103 in Aquarium Heaters
Customer Reviews: 4.1 4.1 out of 5 stars (12) 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); } }); });
Safety Beep Alarm: Designed with temperature probe fault, out-of-water fault, and overheat protection to remind you to check your fish tank, enhance the security of use and avoid potential risks
Smart Heating System: Built-in 2 temp probes detect water temp in real-time. Once the target temperature is reached, the heaters enter standby and resume operation when the water temp drops. You can choose precise warmth or ECO mode according to different needs
Precise Temperature Control, accurate to 0.1°F, with a setting range from 59°F to 93°F, adjustable in 0.5°F increments. It’s ideal for sensitive aquatic species such as betta, guppy, discus, shrimp, and turtle to maintain a stable environment
Slim Size & Space-Saving: This 200-watt heater length 9.2″ (1.2″ diameter), can be easily mounted in narrow sumps or corners. Explosion proof tubular quartz glass heating element has no shell structure, thus no need to worry about fish getting trapped
More Convenient & Safer: This external controller makes adjustments easy without getting your hands wet. It also has a child lock to prevent accidental touch and a memory function that does not need to be reset after power outage
Compact 200W Aquarium Heater – Ideal for 20-40 gallon tanks. Its space-saving design hides easily, providing reliable heating for both freshwater and saltwater setups.