Zoo Med BettaTherm ZM366 mini submersible betta bowl heater – compact aquarium heater with thermal shut-off for betta fish bowls and small tanks

Zoo Med Betta Therm -Betta Therm

SKU: 097612240047

Availability: In stock

Vendor: Zoo Med

Qty:

$59.95

Description

Zoo Med BettaTherm Mini Betta Bowl Heater (ZM366)

Keep your betta fish comfortable year-round with the Zoo Med BettaTherm — a mini-sized, fully submersible heater designed specifically for betta bowls and small aquariums. Small, discreet, and simple to use, the BettaTherm raises the water temperature above ambient room temperature to provide the warmth betta fish need to thrive.

The heater can be buried under gravel for a completely hidden installation, and works on both glass and acrylic tanks. A built-in thermal shut-off at 26°C provides an important safety feature — automatically cutting power if the water temperature reaches the upper threshold.

Key Features

Mini size for betta bowls: Compact heater specifically designed for small betta bowls and nano aquariums
Completely submersible: Can be buried under gravel for a hidden, unobtrusive installation
Thermal shut-off at 26°C: Built-in safety feature — automatically cuts power at the upper temperature threshold
Compatible with glass and acrylic tanks: Safe for use in both tank materials
Fits most fish or betta bowls: Versatile sizing for standard small betta setups

Please note: This heater raises temperature above ambient — it does not maintain a fixed target temperature. Performance depends on ambient room temperature. Always use a separate thermometer to monitor water temperature. Do not run the heater out of water.

Suitable For: Betta fish in betta bowls and small freshwater aquariums.

Specification	Details
Brand	Zoo Med
Model	BettaTherm / ZM366
Type	Mini submersible betta bowl heater
Wattage	7.5W
Diameter	Approx. 7.6cm (3 inches)
Suitable tank size	3.8–11.4L (1–3 gallons)
Temperature rise	Approx. 2.8–5.5°C above ambient room temperature
Thermal shut-off	26°C
Submersible	Yes — bury under gravel
Compatible tanks	Glass and acrylic
Suitable For	Betta bowls and small freshwater aquariums