Marina Betta Submersible Heater – A mini 8-watt heater designed specifically for betta tanks and small desktop aquariums (1 to 5 gallons). It’s a preset heater that automatically warms the water to approximately 78°F – the ideal temperature range for bettas. The compact, flat design allows it to fit in tiny tanks without being obtrusive, and it’s easy to install with suction cups. Using this heater ensures your betta’s water stays consistently warm, which is important for their metabolism and immune system, especially in cooler room environments.
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