This heater is a low-wattage, always on heater. It is perfect for small aquariums where space is limited.

Ideal for desktop aquariums up to 3 gallons.

Features:

Fully submersible

Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank

Quick and easy installation

Shatterproof construction

Can be used with glass or acrylic enclosures

Note: Do NOT operate or leave product plugged in when it is outside of water

Warms aquarium water up to 6°F above ambient room temperature

7.5 Watt works best for 1 to 3 gallon fish tanks