Keep your aquatic world thriving with the Resun 50W Aquarium Heater - built for 40L (10-gallon) freshwater and tropical fish tanks. Unlike entry-level heaters that create hot spots, Resun's signature spiral heating element circulates warmth evenly through the water column, protecting sensitive fish and plants from temperature shocks.
The top-mounted temperature dial gives you precise control, while the red indicator light confirms active heating at a glance - no guesswork, no stress. Whether you mount it vertically along the glass or at a semi-horizontal angle, two suction cups hold it firmly in place. Setup takes under 2 minutes.
A solid choice for beginner aquarists setting up their first tank and experienced hobbyists who want a reliable, no-fuss heater that just works.
Key Features:
- Spiral Heating Element - distributes heat evenly, eliminating dangerous hot spots
- Precise Temperature Dial - top-mounted control for easy, accurate setting
- Red Indicator Light - shows exactly when the heater is actively warming your water
- Dual Mounting Options - install vertically or semi-horizontally to suit your tank layout
- Two Suction Cups Included - secure, stable attachment to any glass tank wall
- Fully Submersible & Watertight - durable glass body built for 24/7 submerged use
- Ideal for 40L / 10-Gallon Tanks - right-sized wattage for consistent, safe heating
Specifications:
- Power: 50W | Voltage: 220-240V, 50/60Hz
- Recommended Tank Size: 40L / 10 Gallon
- Dimensions: 31mm × 285mm | Cable Length: 1.1m
- Mounting: Vertical or semi-horizontal with suction cups
What's in the box
1 x 50W Rising heat aquarium heater
2 x Suction cup hooks
1 x Set-up pamphlet
