Steady warmth for your aquatic world Meet the Dreyoo 2-Pack Submersible Aquarium Heater, a compact pair designed to fit mid-size tanks with steady, reliable warmth

Each heater is crafted to support tanks in the 40–55 gallon range, delivering calm, consistent heat that helps your fish and plants thrive

With their 11-inch length and a 110–120V plug, the set provides a discreet, dependable heating solution that works across freshwater and saltwater setups

The value here lies in precise, hands-on control

An adjustable thermostat spans 68–93 °F, so you can tailor warmth to seasonal needs or species-specific preferences

The red heat indicator gives a quick visual cue when the heater is actively warming, while automatic shutoff helps maintain the target range without overshooting

This thoughtful control system supports a calm, stable environment that you can monitor with ease

Read temperature at a glance Included four thermometer stickers cover a broad range (39–97 °F / 4–36 °C)

These color-changing strips adhere to the glass so you can gauge current conditions at a glance during regular checks or before feeding

It’s a simple, tactile way to stay informed without reaching for a separate instrument

Durable, adaptable design Constructed with 2 mm thickened quartz glass, the heaters resist cracking and are suitable for both fresh and saltwater environments

The slim, hideable design helps preserve the tank’s aesthetics while delivering dependable heat transfer

The pair setup also redundancy if one unit needs maintenance

What’s included and how to use Two submersible heaters, each rated for 300W and 11 inches long Four temperature stickers for easy in-tank monitoring Multiple suction cups for flexible mounting options Plug and cord rated for 110–120V with a 5-foot reach Setup and care tips Plan your temperature first, then affix the suction cups and ensure the heater is fully immersed before powering on

For water changes, let the heater cool before removal

Avoid operating the unit if it’s dry or exposed to air for extended periods

Suitable for freshwater and saltwater aquariums 11-inch length helps with discreet integration into tank layouts Temperature range supports a broad spectrum of aquatic setups Readings are facilitated by the color-changing thermometer stickers FAQ Q: What tank size is for these heaters

A: I for 40–55 gallon tanks per heater; the two-pack provides reliable coverage

Q: How should I install and maintain the heater

A: Set the target temperature, secure with suction cups, fully submerge, and avoid running dry; allow cooling before removal