![[ARRIVED 28-JAN-2026] ORCA 25W Heater](https://cdn.shopify.com/s/files/1/0608/5771/2849/files/arrived-28-jan-2026-orca-25w-heater-5201208.png?v=1769627707)
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Description
[ARRIVED 28-JAN-2026] ORCA 25W HeaterORCA Aquarium Heater 25W Compact fully submersible heater designed for nano aquariums, shrimp tanks, and small tropical setups Quick Facts Power: 25W Type: Fully submersible aquarium heater Best For: Nano aquariums and small tanks Control: Adjustable temperature dial Safety: Automatic shut off protection Indicator: LED operating light Is this for you? Good if: You keep a nano aquarium or desktop tank You need gentle heating for shrimp or bettas You
ORCA Aquarium Heater – 25W
Compact fully submersible heater designed for nano aquariums, shrimp tanks, and small tropical setups
Quick Facts
- Power: 25W
- Type: Fully submersible aquarium heater
- Best For: Nano aquariums and small tanks
- Control: Adjustable temperature dial
- Safety: Automatic shut-off protection
- Indicator: LED operating light
Is this for you?
✔️ Good if:
- You keep a nano aquarium or desktop tank
- You need gentle heating for shrimp or bettas
- You want a compact heater for limited space
- You maintain stable tropical temperatures in small setups
❌ Avoid if:
- You run medium or large aquariums
- You need strong heating in colder rooms
- You want to heat heavily stocked tanks
- You plan to expose the heater above water
Why this heater?
The ORCA 25W Heater is designed specifically for small aquariums where stable temperature is critical but space is limited.
Nano aquariums can experience rapid temperature swings due to low water volume. A correctly sized heater helps reduce fluctuations that may stress fish or shrimp.
With adjustable temperature settings, full submersion capability, and automatic shut-off protection, it provides a simple heating solution for smaller aquariums.
Common mistakes
- Using in tanks too large for 25W output
- Turning heater on before full submersion
- Placing in stagnant areas without water movement
- Ignoring temperature verification with a thermometer
- Expecting fast heating in colder environments
Use made simple
- Fully submerge before powering on
- Install vertically or horizontally
- Adjust to desired temperature
- Allow time for heating stabilisation
- Monitor using a separate aquarium thermometer
Pair with
- Digital aquarium thermometer
- Nano sponge filter
- Shrimp tanks and betta setups
- Small planted aquariums
- Temperature controller (optional)
Smaller heaters work best when correctly matched to tank size. Oversizing a heater in nano tanks can cause unstable heating cycles, while undersizing struggles to maintain consistency.
FAQ
What tank size is a 25W heater suitable for?
Generally suitable for nano aquariums and small tropical tanks depending on room temperature.
Can this heater be fully submerged?
Yes. It is designed for complete underwater use.
Does it include overheating protection?
Yes. Automatic shut-off helps reduce overheating risk.
Can it be installed horizontally?
Yes. Horizontal or vertical installation is suitable when fully submerged.
Should I use a thermometer?
Yes. A separate thermometer is recommended to confirm actual water temperature.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy