SICCE Jolly Preset 6W Plastic Aquarium Heater – Up to 1.6 Gallons
The SICCE Jolly Preset 6W Aquarium Heater is a compact, fully submersible heater designed for pico aquariums, very small nano tanks, aquatic sections of paludariums, and other setups containing up to approximately 6 liters, or 1.6 US gallons, of water.
Its electronic thermostat is factory preset to approximately 77°F, or 25°C. The heater automatically switches off when the preset temperature is reached and resumes heating when additional warmth is needed, providing simple temperature control without an adjustment dial.
The reinforced plastic casing provides a durable alternative to traditional glass heaters. The Jolly Preset also includes a red operating indicator, automatic temperature shutoff, out-of-water thermal protection, suction-cup mounting, a chew-safe spiral cord cover, and decorative adhesive covers that help it blend into the aquarium environment.
Key Features
- Preset to 77°F: Electronic thermostat is factory set to approximately 77°F, or 25°C
- 6-Watt Output: Designed for very small aquariums up to approximately 1.6 gallons
- Automatic Temperature Control: Stops heating when the preset temperature is reached
- Fully Submersible: Reinforced plastic casing is designed for underwater operation
- Durable Plastic Housing: No exposed glass heater tube
- Out-of-Water Protection: Built-in thermal protection switches the heater off when it is no longer submerged
- Red ON/OFF Indicator: Shows when the heater is operating
- Secure Suction-Cup Mount: Helps keep the heater positioned inside the aquarium
- Chew-Safe Cord Cover: Spiral protection helps shield the power cord in turtle and reptile setups
- Decorative Covers Included: Adhesive patterns help the heater blend with aquarium décor
Product Information
- Brand: SICCE
- Product: Jolly Preset Plastic Aquarium Heater
- Model: Jolly Preset 6
- Wattage: 6 watts
- Recommended Maximum Capacity: 6 liters / approximately 1.6 US gallons
- Preset Temperature: 77°F / 25°C
- Temperature Adjustment: Non-adjustable
- Thermostat: Electronic preset thermostat
- Housing: Reinforced plastic
- Installation: Fully submersible
- Indicator: Red ON/OFF light
- Mounting: Suction-cup holder
- Power Cable: Approximately 7.8 feet on the U.S. model
- Voltage and Frequency: 120V / 60Hz U.S. model
- Product Code: TJOP06U
- Aquarium Compatibility: Freshwater and saltwater
Best Used For
- Pico aquariums up to approximately 1.6 gallons
- Very small nano aquariums
- Small shrimp setups when 77°F is appropriate
- Aquatic sections of paludariums
- Small turtle or reptile water areas
- Temporary observation containers within the rated capacity
- Freshwater and marine setups requiring compact preset heating
Preset Temperature
The SICCE Jolly Preset 6W is factory set to approximately 77°F, or 25°C. It does not include an adjustment dial or user-selectable temperature setting.
The electronic thermostat turns the heating element off when the preset temperature is reached. Heating resumes automatically when the water cools and additional warmth is required.
Confirm that approximately 77°F is appropriate for every animal in the aquarium. Some shrimp, amphibians, cool-water species, and temporary treatment setups may require a different temperature.
Recommended Aquarium Size
SICCE rates the 6W Jolly Preset for aquariums containing up to approximately 6 liters, equivalent to about 1.6 US gallons.
The original recommendation of up to 2.5 gallons exceeds the manufacturer’s published capacity and should not be used as the standard tank-size claim.
Actual heating performance may vary according to:
- Room temperature
- Amount of water
- Open-top or covered aquarium design
- Water circulation
- Drafts and nearby windows
- The difference between room temperature and 77°F
The heater may struggle to maintain 77°F in a 1.6-gallon open aquarium located in a cold room. Always verify the actual water temperature with a separate thermometer.
SICCE Jolly Preset Heater Sizing Guide
- 6W: Up to 6 liters / approximately 1.6 gallons
- 12W: Up to 12 liters / approximately 3.2 gallons
- 25W: Up to 25 liters / approximately 6.6 gallons
- 35W: Up to 35 liters / approximately 9.2 gallons
Select the model based on the aquarium’s actual water volume and room conditions. The amount of water displaced by substrate and decorations should also be considered.
Installation Instructions
- Inspect the heater, plastic housing, power cord, plug, suction cups, and cord cover before installation.
- Do not use the heater if the casing or electrical cord appears damaged.
- Attach the supplied suction-cup holder.
- Place the heater fully underwater in the aquarium.
- Position it where water can circulate around the housing.
- Create a drip loop in the cord below the electrical outlet.
- Allow the heater to acclimate underwater before connecting power.
- Plug it into an appropriate electrical outlet.
- Confirm operation with a separate aquarium thermometer.
Always follow the installation, operating, and safety instructions supplied with the heater.
Placement and Water Circulation
Place the heater near gentle water movement from a filter outlet, air-driven filter, or small circulation pump. Consistent circulation helps distribute warmed water throughout the aquarium.
Avoid positioning the heater where decorations completely block water movement. Even in a very small aquarium, poor circulation can produce uneven temperature readings.
SICCE states that the reinforced plastic Jolly heaters may be positioned beneath suitable gravel. When using this installation method, follow the manufacturer’s instructions and avoid placing heavy rocks or decorations directly on the heater or cord.
Red ON/OFF Indicator Light
The red indicator light shows when the preset heater is operating. It turns off when the target temperature has been reached or when the heater’s safety protection is activated.
Normal cycling is expected. The light does not need to remain illuminated continuously for the aquarium to stay near the preset temperature.
Automatic Temperature Shutoff
The Jolly Preset model includes an electronic thermostat that automatically stops heating when the water reaches approximately 77°F.
This feature distinguishes the Jolly Preset series from SICCE’s standard 10W and 20W Jolly heaters, which are designed to remain on continuously while submerged and do not use the same preset temperature control.
Make sure the product being purchased specifically says Jolly Preset 6W.
Out-of-Water Thermal Protection
The heater includes thermal protection designed to switch the unit off when it is no longer underwater. This helps reduce overheating if the heater becomes exposed.
The safety feature should not replace proper handling. Always unplug the heater before draining the aquarium, removing the unit, or placing hands in the water.
Use in Betta Aquariums
The Jolly Preset 6W may be suitable for a very small betta setup within the manufacturer’s 1.6-gallon limit, but aquarium size and animal welfare should be considered separately.
Bettas generally benefit from a properly filtered, heated aquarium with enough room to swim and stable water quality. The small heater rating should not be interpreted as a recommendation to permanently house a betta in a tiny bowl.
For larger betta aquariums, select a higher-wattage heater rated for the full tank volume.
Use with Shrimp
The Jolly Preset 6W may be used in a small shrimp aquarium when approximately 77°F is suitable for the species.
Some Neocaridina shrimp tolerate this temperature, while many Caridina species may prefer cooler water. Warm water also holds less dissolved oxygen than cool water.
Research the requirements of the specific shrimp species and monitor temperature continuously with a separate thermometer.
Freshwater and Saltwater Use
The Jolly Preset is designed for small freshwater and marine aquariums. The preset temperature must still be appropriate for the livestock being maintained.
In saltwater environments, inspect the heater and cord regularly for salt deposits. Unplug the heater before cleaning and never use household cleaning chemicals.
Use in Turtle Tanks, Terrariums, and Paludariums
SICCE identifies small turtle tanks among the intended uses for the Jolly heater series. The reinforced plastic housing and chew-safe spiral cord cover provide advantages in setups where traditional glass equipment may be more vulnerable.
The heater must remain in a sufficiently deep aquatic area and stay properly submerged during normal operation.
Do not allow rocks, décor, or animal activity to crush, dislodge, or expose the heater.
Using a Separate Thermometer
Always use an independent aquarium thermometer with a preset heater. The thermometer confirms the actual water temperature and helps identify improper sizing, poor circulation, or equipment failure.
Place the thermometer away from the heater so it measures the general aquarium temperature rather than the warmer water immediately around the heating element.
Water-Change Safety
Unplug the heater before lowering the aquarium water level. Although it has out-of-water thermal protection, disconnecting power remains the safest practice.
Allow the heater to cool before removing or handling it. After the aquarium is refilled, make sure the unit is fully submerged and allow it to acclimate before plugging it back in.
Cleaning and Maintenance
- Unplug the heater.
- Allow it to cool.
- Remove it carefully from the aquarium.
- Wipe away algae, mineral deposits, and debris with a soft cloth or sponge.
- Inspect the plastic housing, cord, plug, suction cups, and spiral cord cover.
- Reinstall the heater fully underwater.
- Allow it to acclimate before reconnecting power.
Do not use abrasive tools, sharp scrapers, bleach, soap, or household cleaners.
Electrical Safety
- Create a drip loop in the power cord below the outlet
- Use a GFCI-protected electrical outlet whenever possible
- Keep the plug and outlet dry
- Do not handle the plug with wet hands
- Unplug aquarium equipment before placing hands in the water
- Do not use a heater with damaged housing or wiring
- Never pull or carry the heater by its cord
- Do not cut, splice, or attempt to repair the power cord
- Keep the heater properly submerged during operation
Important Aquarium Heater Note
No aquarium heater should be considered completely fail-proof. Check the aquarium temperature regularly with a separate thermometer.
The SICCE Jolly Preset 6W is rated for a maximum of approximately 1.6 gallons and is not adjustable. Do not use it for a larger aquarium or for livestock requiring a temperature substantially different from 77°F.
Very small aquariums can experience rapid changes in temperature and water quality. Monitor them closely and maintain appropriate filtration, aeration, and water-change routines.
Frequently Asked Questions
What size aquarium is the SICCE Jolly Preset 6W designed for?
It is rated for aquariums up to approximately 6 liters, or 1.6 US gallons.
Is it suitable for aquariums up to 2.5 gallons?
The manufacturer’s published maximum is approximately 1.6 gallons. A higher-wattage model should be selected for larger tanks.
What temperature is it preset to?
It is preset to approximately 77°F, or 25°C.
Can the temperature be adjusted?
No. The Jolly Preset 6W uses a factory-set electronic thermostat.
Does it turn off automatically?
Yes. The preset model stops heating when the target temperature is reached.
Is the heater made from glass?
No. It uses a reinforced plastic casing without an exposed glass heater tube.
Is it fully submersible?
Yes. It is designed for fully submerged operation.
Does it have out-of-water protection?
Yes. Built-in thermal protection switches the heater off when it is no longer underwater.
Does it have an indicator light?
Yes. The Jolly Preset series uses a red ON/OFF indicator light.
Can it be placed beneath aquarium gravel?
SICCE states that the reinforced plastic Jolly heaters may be placed beneath suitable gravel when installed according to the manufacturer’s directions.
Can it be used in freshwater aquariums?
Yes. It is designed for small freshwater aquariums within its rated capacity.
Can it be used in saltwater aquariums?
Yes. It may be used in small marine aquariums when 77°F is appropriate for the livestock.
Is it suitable for bettas?
It may provide heat for an aquarium within the 1.6-gallon rating, but a betta should still be provided with adequate swimming space, filtration, and stable water quality.
Is it safe for shrimp?
It may be used with shrimp species that are suited to approximately 77°F.
Does it include a chew-safe cord cover?
Yes. SICCE includes a spiral cord cover intended to provide added protection in turtle and reptile setups.
Should I use a separate thermometer?
Yes. A separate thermometer is recommended with every aquarium heater.
Should it be unplugged during water changes?
Yes. Unplug the heater before lowering the water level, cleaning the aquarium, or removing the unit.
How long is the power cable?
The official U.S. model is listed with an approximately 7.8-foot power cable.
Available at Tropical Treasures Wyo
The SICCE Jolly Preset 6W Plastic Aquarium Heater provides compact, automatic heating for freshwater and saltwater pico aquariums up to approximately 1.6 gallons. Its reinforced plastic housing, preset electronic thermostat, red indicator light, out-of-water protection, suction-cup mount, and chew-safe cord cover make it a versatile option for very small aquatic setups.
Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop SICCE aquarium heaters, nano filters, aquarium thermometers, air pumps, temperature-control equipment, and small-tank supplies.
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