Meet the Orlushy 25W Submersible Aquarium Heater, a compact heating solution designed for small tanks from 1 to 6 gallons

At 4

7 inches long, it sits neatly behind decor and remains discreet while delivering consistent warmth for freshwater and saltwater setups

In fish-only nano tanks, it can be fully submerged vertically; in turtle or other larger habitats, it horizontal placement to suit the space

Precise, automatic temperature control keeps your tank comfortable without guesswork

The heater ships with a preset 78°F and an accuracy of ±3°F

It uses a visible heating cycle: the red indicator lights up to begin warming, then steps down as the water approaches the target, and the green indicator signals stable temperature at 78°F

Durable construction combines a heat-resistant ABS outer shell with a nickel-chromium heating wire for faster warming and a non-corrosive quartz glass interior

The result is a compact device designed to withstand regular use without deformation or corrosion

Safety and maintenance are straightforward

Ensure the heater is submerged before powering on

To clean or change water, unplug and let the unit cool for 10–20 minutes before removal

Orlushy backs this heater with a 1-year warranty and responsive support

Why a small-tank heater makes sense In compact tanks, a reliable heater helps keep the water steady, supporting predictable behavior and a stable environment

The 25W rating targets 1–6 gallons, which is common for betta bowls, nano reefs, or planted tanks, and other compact setups

The unobtrusive form lets you preserve the look of your aquarium while maintaining consistent warmth

25W heating for 1–6 gallon tanks Automatic constant temperature at 78°F (±3°F) Red heating indicator and green maintenance indicator Slim, space-saving design for hidden placement Durable ABS shell, nickel-chromium heating wire, quartz glass submerged operation; unplug to clean 1-year warranty and responsive Orlushy support Place vertically in standard fish tanks; horizontally for turtle habitats Verify actual temperature with a reliable thermometer Aim for gradual temperature changes to protect livestock Keep the heater away from substrates and obstructions for even heating FAQ Q: What tank sizes is this heater designed for

A: Designed for 1–6 gallon tanks, suitable for freshwater and saltwater setups

Q: How can I tell if the Orlushy heater is working

A: Red indicates heating; green shows temperature is stabilized at 78°F (±3°F)