Orlushy Submersible Adjustable Aquarium Heater
The budget best-seller — cheap, ubiquitous and fine in a stable room, but pair it with a separate thermometer and watch the dial.
- +Fully submersible
- +Adjustable temperature dial
- +Easy to position
- +Includes a stick-on thermometer
- −Inaccurate dial that drifts from the set point
- −No auto shut-off
- −Glass can crack
This is the Orlushy Submersible Adjustable Aquarium Heater, the budget best-seller: a fully submersible glass heater with an adjustable dial and an included stick-on thermometer, offered in wattages from 25W to 300W. It is cheap and ubiquitous and fine in a stable room, but the dial drifts and there is no auto shut-off.
- Budget builds and backup heaters
- Stable-temperature rooms where small drift is low risk
- Beginners pairing it with a separate thermometer
- Valuable livestock that cannot tolerate a temperature swing
- Anyone who wants auto shut-off dry protection
- Keepers who will not verify temperature independently
We separate what the maker claims from what independent sources confirm, what owners report, and where we are drawing an inference. We do not bench-test products.
- Fully submersible glass heater with an adjustable dial
- Includes a stick-on thermometer
- Wattage options from 25W to 300W
- The dial can drift from the set point
- There is no auto shut-off, and glass can crack
- A best-seller; owners consistently note dial inaccuracy and advise a separate thermometer
- Cheap and everywhere, and fine as a budget or backup heater, but the drifting dial and lack of shut-off mean you must run a thermometer and watch it
The cheapest heater here; electricity is the only ongoing cost. Budget nothing extra except an independent thermometer, which this heater particularly needs given the dial drift.
- The dial drifts from the set point, so verify with a thermometer
- No auto shut-off, so a stuck thermostat runs temperature away
- Glass can crack, especially if handled hot
We do not bench-measure temperature accuracy; this synthesises the manufacturer's specification and aggregated owner reports. We give gear and method guidance only, not livestock or disease advice; route fish-health questions to a veterinarian or an established authority. Always run an independent thermometer with any heater.
The dial drifts, so set it against a separate thermometer and check regularly. For a stable room and a watchful keeper it is fine; for valuable stock, a more accurate heater is safer.
Yes. Run an independent thermometer with any heater and act on it rather than trusting the built-in dial or readout alone.
No. Unplug it and let it cool in the water first; a hot heater lifted into the air can fail or crack.