Not every keeper wants to think about temperature settings — sometimes the simplest, most foolproof option is a heater that's already set correctly out of the box. The Sicce SCUBA Preset line is fixed at 77°F (25°C), no dial to set or accidentally bump, across six wattages.
Why a Fixed-Temperature Heater
77°F sits comfortably in the middle of the range most tropical community fish thrive in, and a preset heater removes the risk of a dial being knocked out of position or set incorrectly — simplicity that many keepers, especially those newer to the hobby, genuinely prefer.
Choosing a Wattage
- Preset 50 — 10–15 gallons
- Preset 100 — 20–35 gallons
- Preset 150 — 31–45 gallons
- Preset 200 — 40–60 gallons
- Preset 250 — 53–75 gallons
- Preset 300 — 65–90 gallons
Setup Tips
- Size to your tank volume using the ranges above — an undersized heater struggles to maintain temperature in colder rooms.
- Position in water flow for even heat distribution rather than a stagnant corner.
- Use a separate thermometer to confirm actual tank temperature, since a preset heater has no display of its own.
The Sicce SCUBA Preset line is available at Marine Concept Supply across all wattages — order online or pick up at our shop in Wheeling, IL. Shop 50W, 100W, 150W, 200W, 250W, or 300W, and browse more aquarium heaters.

