Heaters · adjustable-submersible
Fluval M50
Manufacturer-rated for aquariums up to 15 US gal.
Slim 50 W adjustable submersible heater with a 66–86°F maker-published control range.
Specifications checked with the manufacturer on 2026-09-07.
Consider: A cold room or open tank changes the heating load. Use the exact-model sizing chart with your coolest room temperature before choosing from the gallon rating alone.
US product record · Model / item A781. Confirm the model and package contents before purchase.
Specifications that affect fit
- Manufacturer capacity
- Up to 15 US gal
- Power
- 50 W
- Supply voltage
- 120 V / 60 Hz
- Dimensions
- 11 × 1 × 1 in (L × W × H)
Use the exact nameplate watts and your real schedule in the aquarium electricity cost calculator. Leave an unpublished wattage blank.
Before choosing this model
- Size for actual water volume and the required rise above room temperature.
- Verify water temperature with a separate thermometer.
Read the equipment selection guide alongside these model details. A rated capacity does not settle livestock needs, room conditions or physical clearance.
Included items & upkeep
- heater
- mounting bracket
- suction cups
Plan for the routine work
- Unplug and allow the heater to cool before removal.
- Follow the manual's water-level, placement, and inspection instructions.
Enter your own supply prices and replacement schedule in the first-year cost planner. Use the exact manual for maintenance intervals and service steps.