{"product_id":"sicce-jolly-preset-25w-aquarium-heater","title":"SICCE Jolly Preset 25W Plastic Aquarium Heater – Up to 6.6 Gallons","description":"\u003cp\u003eThe SICCE Jolly Preset 25W Aquarium Heater is a compact, fully submersible heater designed for nano aquariums, small freshwater and marine systems, turtle tanks, terrariums, and paludariums. Its reinforced plastic casing provides a durable alternative to traditional glass heaters while allowing flexible placement inside small aquarium setups.\u003c\/p\u003e\n\u003cp\u003eThe electronic thermostat is factory preset to approximately 77°F, or 25°C, so no manual temperature adjustment is required. The heater automatically turns off when the preset temperature is reached and begins heating again when needed.\u003c\/p\u003e\n\u003cp\u003eSICCE rates the 25-watt model for aquariums up to approximately 25 liters, or 6.6 US gallons. Actual heating performance depends on aquarium volume, room temperature, lid coverage, water circulation, and the difference between the room and desired aquarium temperatures.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreset to 77°F:\u003c\/strong\u003e Electronic thermostat is factory set to approximately 77°F, or 25°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-Watt Output:\u003c\/strong\u003e Designed for nano aquariums up to approximately 6.6 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforced Plastic Housing:\u003c\/strong\u003e Durable construction without an exposed glass heater tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Submersible:\u003c\/strong\u003e Designed to operate completely underwater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Temperature Control:\u003c\/strong\u003e Turns off when the preset temperature is reached\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOut-of-Water Protection:\u003c\/strong\u003e Thermal protection switches the heater off when it is not submerged\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed Indicator Light:\u003c\/strong\u003e Shows when the heater is actively operating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrong Suction-Cup Mount:\u003c\/strong\u003e Helps secure the heater inside the aquarium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChew-Safe Cord Cover:\u003c\/strong\u003e Spiral cord protection provides added durability around turtles and reptiles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Placement:\u003c\/strong\u003e May be installed visibly or placed beneath suitable aquarium gravel or sand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e SICCE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Jolly Preset Aquarium Heater\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Jolly Preset 25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 25 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Maximum Capacity:\u003c\/strong\u003e 25 liters \/ 6.6 US gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreset Temperature:\u003c\/strong\u003e 77°F \/ 25°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Adjustment:\u003c\/strong\u003e Non-adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e Reinforced plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Fully submersible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicator:\u003c\/strong\u003e Red ON\/OFF LED\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Suction-cup holder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Length:\u003c\/strong\u003e 6.3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Maximum Diameter:\u003c\/strong\u003e 1.1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Cable Length:\u003c\/strong\u003e 6 feet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAquarium Compatibility:\u003c\/strong\u003e Freshwater and saltwater\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBest Used For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNano aquariums up to approximately 6.6 gallons\u003c\/li\u003e\n\u003cli\u003eBetta aquariums within the recommended capacity\u003c\/li\u003e\n\u003cli\u003eSmall shrimp aquariums\u003c\/li\u003e\n\u003cli\u003eDesktop aquariums\u003c\/li\u003e\n\u003cli\u003eSmall tropical community tanks\u003c\/li\u003e\n\u003cli\u003eSmall quarantine or observation tanks\u003c\/li\u003e\n\u003cli\u003eMarine nano aquariums\u003c\/li\u003e\n\u003cli\u003eTurtle tanks\u003c\/li\u003e\n\u003cli\u003eTerrariums and paludariums with an appropriate aquatic section\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePreset Temperature\u003c\/h3\u003e\n\u003cp\u003eThe SICCE Jolly Preset 25W is factory set to approximately 77°F, or 25°C. It does not include a manual temperature dial or external controller.\u003c\/p\u003e\n\u003cp\u003eThis heater is best suited for aquarium inhabitants whose preferred temperature range includes approximately 77°F. Confirm the proper temperature range for every fish, shrimp, plant, turtle, or other animal before selecting a preset heater.\u003c\/p\u003e\n\u003cp\u003eSome tropical species may require warmer water, while certain shrimp, cold-water fish, or seasonal setups may require cooler conditions. An adjustable heater is a better choice when a specific temperature other than 77°F is needed.\u003c\/p\u003e\n\u003ch3\u003eRecommended Aquarium Size\u003c\/h3\u003e\n\u003cp\u003eSICCE rates the 25W Jolly Preset for aquariums up to approximately 25 liters, or 6.6 US gallons.\u003c\/p\u003e\n\u003cp\u003eThe original estimate of 8 gallons is higher than the published capacity. Use the official 6.6-gallon maximum as the safer merchandising recommendation.\u003c\/p\u003e\n\u003cp\u003eHeating performance varies according to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAmount of water\u003c\/li\u003e\n\u003cli\u003eRoom temperature\u003c\/li\u003e\n\u003cli\u003eOpen or covered aquarium design\u003c\/li\u003e\n\u003cli\u003eWater circulation\u003c\/li\u003e\n\u003cli\u003eDrafts and exterior walls\u003c\/li\u003e\n\u003cli\u003eDifference between room temperature and 77°F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA heater suitable for 6.6 gallons in a warm room may struggle in the same aquarium when the room is significantly colder.\u003c\/p\u003e\n\u003ch3\u003eSICCE Jolly Preset Sizing Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e6W:\u003c\/strong\u003e Up to approximately 1.6 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12W:\u003c\/strong\u003e Up to approximately 3.2 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25W:\u003c\/strong\u003e Up to approximately 6.6 gallons\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35W:\u003c\/strong\u003e Up to approximately 9.2 gallons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese are the published maximum aquarium capacities for the Jolly Preset series. Room conditions and aquarium design may require choosing a different wattage or an adjustable heater.\u003c\/p\u003e\n\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInspect the heater, cord, plug, suction cups, and plastic housing before installation.\u003c\/li\u003e\n\u003cli\u003eDo not use the heater if the cord, plug, or casing appears damaged.\u003c\/li\u003e\n\u003cli\u003eAttach the supplied suction-cup mount.\u003c\/li\u003e\n\u003cli\u003ePlace the heater fully underwater.\u003c\/li\u003e\n\u003cli\u003ePosition it where water can circulate around the heater.\u003c\/li\u003e\n\u003cli\u003eCreate a drip loop in the power cord below the electrical outlet.\u003c\/li\u003e\n\u003cli\u003eAllow the heater to acclimate underwater before connecting power.\u003c\/li\u003e\n\u003cli\u003ePlug it into an appropriate outlet and verify operation using a separate aquarium thermometer.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFollow the included SICCE instructions for placement, operating depth, cleaning, and electrical safety.\u003c\/p\u003e\n\u003ch3\u003ePlacement and Water Flow\u003c\/h3\u003e\n\u003cp\u003ePlace the heater near gentle but consistent water movement from a filter outlet, internal filter, or circulation pump. This helps distribute warmed water throughout the aquarium.\u003c\/p\u003e\n\u003cp\u003eAvoid placing the heater where decorations completely block circulation. Although the Jolly may be placed beneath gravel or sand, it should be installed according to SICCE’s instructions and remain accessible for inspection.\u003c\/p\u003e\n\u003ch3\u003eCan It Be Placed Under Gravel or Sand?\u003c\/h3\u003e\n\u003cp\u003eYes. SICCE specifically states that the Jolly’s plastic casing allows it to be placed beneath aquarium gravel, making it especially useful in turtle and reptile setups.\u003c\/p\u003e\n\u003cp\u003eUse only suitable aquarium substrate and avoid locations where heavy rocks or decorations could crush the heater or damage its cord. The heater should still be periodically inspected for damage and proper operation.\u003c\/p\u003e\n\u003ch3\u003eRed ON\/OFF Indicator Light\u003c\/h3\u003e\n\u003cp\u003eThe red indicator light shows when the heater is operating. It will turn off when the preset temperature is reached or when the thermal protection activates.\u003c\/p\u003e\n\u003cp\u003eNormal cycling is expected. The indicator does not need to stay illuminated continuously for the heater to maintain temperature.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Temperature Shutoff\u003c\/h3\u003e\n\u003cp\u003eThe preset model automatically stops heating when the water reaches approximately 77°F. Heating resumes when the temperature drops and additional heat is required.\u003c\/p\u003e\n\u003cp\u003eThe heater also includes thermal protection intended to stop operation when it is out of the water, helping reduce overheating risk.\u003c\/p\u003e\n\u003cp\u003eThis protection should not replace safe handling. Always unplug the heater before removing it or lowering the aquarium water level.\u003c\/p\u003e\n\u003ch3\u003eUse with Bettas\u003c\/h3\u003e\n\u003cp\u003eThe Jolly Preset 25W may be used for bettas in aquariums within its published capacity, provided approximately 77°F is suitable for the setup.\u003c\/p\u003e\n\u003cp\u003eUse a separate thermometer because betta aquariums can heat differently depending on room temperature, lid coverage, and filter circulation.\u003c\/p\u003e\n\u003cp\u003eFor aquariums substantially smaller than 6 gallons, a lower-wattage Jolly model may be more appropriate.\u003c\/p\u003e\n\u003ch3\u003eUse with Shrimp\u003c\/h3\u003e\n\u003cp\u003eThe heater may be used in shrimp aquariums when the shrimp species is compatible with approximately 77°F.\u003c\/p\u003e\n\u003cp\u003eNeocaridina often tolerate this temperature, although cooler conditions may be preferred in some setups. Many Caridina species can be more sensitive to warm water and reduced oxygen levels.\u003c\/p\u003e\n\u003cp\u003eResearch the requirements of the specific shrimp species and monitor the aquarium with a separate thermometer.\u003c\/p\u003e\n\u003ch3\u003eUse in Marine Aquariums\u003c\/h3\u003e\n\u003cp\u003eThe Jolly Preset is designed for both freshwater and marine aquariums. Its compact plastic body can be useful in small saltwater quarantine tanks, nano systems, and other appropriately sized marine setups.\u003c\/p\u003e\n\u003cp\u003eRegularly inspect the housing, cord, suction cups, and plug for salt buildup or damage. Disconnect power before cleaning.\u003c\/p\u003e\n\u003ch3\u003eUse in Quarantine Tanks\u003c\/h3\u003e\n\u003cp\u003eThe heater may be used in small quarantine or observation aquariums when approximately 77°F is appropriate for the fish being housed.\u003c\/p\u003e\n\u003cp\u003eBecause the temperature is not adjustable, it may not be suitable for treatments or species requiring a different temperature.\u003c\/p\u003e\n\u003cp\u003eDisinfect equipment between uses and avoid damaging the plastic casing or electrical cord.\u003c\/p\u003e\n\u003ch3\u003eUsing a Separate Thermometer\u003c\/h3\u003e\n\u003cp\u003eAlways use an independent aquarium thermometer with any heater.\u003c\/p\u003e\n\u003cp\u003eA thermometer helps verify that:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe heater is operating\u003c\/li\u003e\n\u003cli\u003eThe tank is reaching the intended temperature\u003c\/li\u003e\n\u003cli\u003eThe room is not too cold for the heater’s capacity\u003c\/li\u003e\n\u003cli\u003eThe aquarium is not overheating\u003c\/li\u003e\n\u003cli\u003eHeat is being distributed evenly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePlace the thermometer away from the heater for a more representative reading of the aquarium’s overall water temperature.\u003c\/p\u003e\n\u003ch3\u003eWater-Change Safety\u003c\/h3\u003e\n\u003cp\u003eUnplug the heater before draining water, rearranging decorations, cleaning the aquarium, or placing hands in the tank.\u003c\/p\u003e\n\u003cp\u003eAllow the heater to cool before removing it. After reinstalling or refilling the aquarium, allow it to acclimate underwater before reconnecting power.\u003c\/p\u003e\n\u003cp\u003eNever pull the heater from the aquarium by its cord.\u003c\/p\u003e\n\u003ch3\u003eElectrical Safety\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUse a drip loop below the outlet\u003c\/li\u003e\n\u003cli\u003eKeep the plug and outlet dry\u003c\/li\u003e\n\u003cli\u003eUse a GFCI-protected outlet when possible\u003c\/li\u003e\n\u003cli\u003eDo not handle the plug with wet hands\u003c\/li\u003e\n\u003cli\u003eDo not use the heater with a damaged cord or casing\u003c\/li\u003e\n\u003cli\u003eDo not cut or repair the power cord\u003c\/li\u003e\n\u003cli\u003eUnplug the heater before cleaning or removal\u003c\/li\u003e\n\u003cli\u003eUse indoors only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCleaning and Maintenance\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eUnplug the heater.\u003c\/li\u003e\n\u003cli\u003eAllow it to cool.\u003c\/li\u003e\n\u003cli\u003eRemove it carefully from the aquarium.\u003c\/li\u003e\n\u003cli\u003eWipe away algae, mineral deposits, or debris with a soft cloth or sponge.\u003c\/li\u003e\n\u003cli\u003eInspect the housing, cord, suction cups, and spiral cord cover.\u003c\/li\u003e\n\u003cli\u003eReinstall the heater fully underwater.\u003c\/li\u003e\n\u003cli\u003eAllow it to acclimate before reconnecting power.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eDo not use abrasive cleaners, sharp scrapers, or household chemicals.\u003c\/p\u003e\n\u003ch3\u003eImportant Aquarium Heater Note\u003c\/h3\u003e\n\u003cp\u003eNo aquarium heater should be considered completely fail-proof. Use a separate thermometer and check the temperature regularly.\u003c\/p\u003e\n\u003cp\u003eThe Jolly Preset 25W is rated for aquariums up to approximately 6.6 gallons and is not adjustable. Do not use it when livestock requires a temperature substantially different from 77°F.\u003c\/p\u003e\n\u003cp\u003eActual performance depends on room temperature, aquarium volume, lid coverage, and water movement. A larger aquarium or cold room may require a higher-wattage heater.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size aquarium is the SICCE Jolly Preset 25W designed for?\u003c\/strong\u003e\u003cbr\u003eIt is rated for aquariums up to approximately 25 liters, or 6.6 US gallons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it recommended for tanks up to 8 gallons?\u003c\/strong\u003e\u003cbr\u003eNo. SICCE’s published maximum for the 25W model is approximately 6.6 gallons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat temperature is it preset to?\u003c\/strong\u003e\u003cbr\u003eIt is preset to approximately 77°F, or 25°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the temperature be adjusted?\u003c\/strong\u003e\u003cbr\u003eNo. The Jolly Preset has a fixed electronic thermostat and no manual adjustment control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the heater made from glass?\u003c\/strong\u003e\u003cbr\u003eNo. It has a reinforced plastic casing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it fully submersible?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed to operate fully underwater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it turn off automatically?\u003c\/strong\u003e\u003cbr\u003eYes. The preset model stops heating when the target temperature is reached.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it have protection if removed from the water?\u003c\/strong\u003e\u003cbr\u003eYes. SICCE states that thermal protection switches the heater off when it is not submerged.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it have an indicator light?\u003c\/strong\u003e\u003cbr\u003eYes. The preset model uses a red ON\/OFF LED indicator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be placed under gravel?\u003c\/strong\u003e\u003cbr\u003eYes. SICCE states that the reinforced plastic Jolly heater can be placed beneath gravel or sand when properly installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in saltwater?\u003c\/strong\u003e\u003cbr\u003eYes. It is designed for freshwater and marine aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for betta tanks?\u003c\/strong\u003e\u003cbr\u003eYes, when the aquarium is within the recommended size range and 77°F is appropriate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it safe for shrimp?\u003c\/strong\u003e\u003cbr\u003eIt may be used in shrimp aquariums when the species is suited to approximately 77°F.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used in turtle tanks?\u003c\/strong\u003e\u003cbr\u003eYes. SICCE specifically includes turtle tanks among the intended applications and provides a chew-safe spiral cord cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I use a separate thermometer?\u003c\/strong\u003e\u003cbr\u003eYes. A separate thermometer is recommended to verify the actual aquarium temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould it be unplugged during water changes?\u003c\/strong\u003e\u003cbr\u003eYes. Unplug the heater before lowering the water level, cleaning, or removing it.\u003c\/p\u003e\n\u003ch3\u003eAvailable at Tropical Treasures Wyo\u003c\/h3\u003e\n\u003cp\u003eThe SICCE Jolly Preset 25W Aquarium Heater provides compact, automatic heating for freshwater and saltwater nano aquariums up to approximately 6.6 gallons. Its reinforced plastic body, preset electronic thermostat, indicator light, out-of-water protection, suction-cup holder, and chew-safe cord cover make it especially useful for small aquariums and turtle setups.\u003c\/p\u003e\n\u003cp\u003eVisit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop SICCE aquarium heaters, thermometers, nano filters, air pumps, aquarium equipment, and temperature-control supplies.\u003c\/p\u003e","brand":"Tropical Treasures Wyo LLC","offers":[{"title":"Default Title","offer_id":52155718271189,"sku":null,"price":34.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/4545\/8133\/files\/SI97714-2T.png?v=1785067206","url":"https:\/\/tropicaltreasureswyo.com\/products\/sicce-jolly-preset-25w-aquarium-heater","provider":"Tropical Treasures Wyo LLC","version":"1.0","type":"link"}