TheSicce Jolly 20W Pre-Set Heateris a compact, fully submersible aquarium heater designed for small and nano tanks. Built in Italy with Sicce’s signature reliability, the Jolly is factory pre-set to78°F (26°C)so there is nothing to calibrate, just plug it in and let it run. Safe for both freshwater and saltwater use.
Looking for a different size? See the Sicce Jolly 10W for nano tanks, browse all aquarium equipment, or compare other small-tank heaters like the Eheim Jager TruTemp 25W.
Features
- Pre-set to 78°F (26°C), no dial to adjust or thermometer to calibrate
- Fully submersible, mount vertically or horizontally
- Shock-resistant plastic body, no glass tube to crack
- Built-in safety thermostat with automatic shut-off
- Suction-cup mount included
- Compact form factor, ideal for nano and small aquariums
- Made in Italy by Sicce
Specifications
| Brand | Sicce |
| Model | Jolly 20W |
| Wattage | 20 W |
| Pre-Set Temperature | 78°F (26°C) |
| Recommended Tank Size | 4 to 10 gallons (15 to 40 L) |
| Body Material | Shock-resistant plastic |
| Submersible | Fully submersible |
| Water Type | Freshwater & Saltwater |
| Mounting | Suction cup (included) |
| Origin | Made in Italy |
Which Sicce Jolly Is Right for You?
- Sicce Jolly 10W for nano tanks roughly 1.5 to 4 gallons
- Sicce Jolly 20W(this listing) for small tanks roughly 4 to 10 gallons
For larger aquariums, browse our full Equipment collection, including titanium options like the IceCap 50W Titanium or the Eheim Jager 125W.
Recommended Pairings
- Squeaky’s Digital Thermometer to verify tank temperature at a glance
- IceCap Magnetic Heater Mount for a cleaner installation
- Hydros Magnet Mount Temperature Sensor for smart monitoring
- Water testing supplies to keep parameters dialed in
FAQ
Can I adjust the temperature?
No, the Jolly is factory pre-set to 78°F (26°C), which is ideal for most tropical freshwater and marine aquariums. If you need a different setpoint, look at the Eheim Jager TruTemp 25W or pair an unregulated heater with a controller like the IceCap Heater Controller.
Is it safe in saltwater?
Yes, the Jolly is rated for both freshwater and saltwater aquariums.
Does it shut off automatically?
Yes, the built-in thermostat cuts power once the water reaches the pre-set temperature and re-engages as the tank cools.
How long does it run?
Sicce heaters are known for their long service life. Replace any aquarium heater every two to three years as a precaution and always unplug before removing from the tank.
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