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Marina Betta Fish 8W Submersible Heater - For Fish Tank Aquariums up to 1.5 US Gallons (5 L)

Marina Betta Fish 8W Submersible Heater - For Fish Tank Aquariums up to 1.5 US Gallons (5 L)

Q: Does this heater keep stable temperature? I've heard horror stories about preset heaters cooking the betta because temp went way too high .

No, probably not in the sense you mean. This is an eight watt "always on" type of heater, it has no thermostat. The heater will continue to emit eight watts worth of heat whenever it is plugged in. With very few exceptions all small "bowl" or "betta" heaters work this way, the only difference is the wattage. They are available in 5 to 15 watts, you need to match tank size, ambient temperature, and other variables to heater wattage. A thermometer and monitoring is essential, especially at first to determine what temperature a particular heater keeps a particular tank, and if room temperature rises so will the water temperature. The term "preset" is not really applicable to these heaters, preset heaters have a thermostat that is permanently set at a certain temperature. If a heater description uses the term preset without stating a specific temperature (usually 78°) then it is NOT a thermostatic heater- it is an always on type. In too small of a tank or too warm a room these can overheat the water. Bettas are very heat tolerant, which is why using these heaters is feasible, but care is still needed. In anything under 3 gallons I think eight watts may be more than needed unless in a fairly cool room.

Q: Would this be okay for a very small tank that only holds 10oz-12oz water?

The heater is very small, but I'm not sure how big a tank that size looks. The heater is about 4 inches long and 2 inches wide.

Q: It seems my heater in our 1/2 gallon tank is going up to 85 degrees. Is that too hot?

Ideal water temp for bettas is between 78 and 80 degrees. Not 85...so ignore the people saying that's fine.

Product ID: 6549137

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Details

Material
Plastic
Voltage
110 Volts
Item Length
7.1 Inches
Brand
Marina
Color
Black

⚡8W Power

🌊1.5 Gallon Capacity

🛠️Durable Polymer

Frequently Bought Together

Marina Betta Fish 8W Submersible Heater - For Fish Tank Aquariums up to 1.5 US Gallons (5 L)

Ultra Fresh Betta Fish Food, Pro Shrimp Patties, 50% Sword Prawns + Akiami Paste Shrimps, All Natural Protein, Rich in Calcium, for Betta's Healthy Development and Cleaner Water, 0.7 oz

Aqueon Aquarium Fish Tank Betta Bowl Plus Water Conditioner, 4 Ounce

Description

🐠 Dive into Comfort: Your Betta's New Best Friend!

DURABLE DESIGN - Tougher than glass, built to last in your aquatic paradise.
PAIR WITH PRECISION - Combine with Marina Thermometer for spot-on temperature accuracy.
EFFORTLESS INSTALLATION - Suction cups make setup a breeze—no tools required!
CREATE THE PERFECT HABITAT - Ensure your betta thrives with optimal temperature control.
AUTOMATIC TEMPERATURE REGULATION - Set it and forget it—your fish will thank you!

The MarinaBetta Fish 8W Submersible Heater is designed for aquariums up to 1.5 gallons, providing a reliable and efficient heating solution. Made from durable polymer, this heater is easy to install and automatically maintains the desired temperature, ensuring a comfortable environment for your betta fish.

Specifications

Wattage	8 watts
Voltage	110 Volts
Item Weight	0.17 Kilograms
Item Length	7.1 Inches
Color	Black
Material	durable polymer

Have a Question? See What Others Asked

Does this heater keep stable temperature? I've heard horror stories about preset heaters cooking the betta because temp went way too high .

Is there any reason that I couldn't use this outside to keep a dog's water bowl from freezing?

Would this be okay for a very small tank that only holds 10oz-12oz water?

It seems my heater in our 1/2 gallon tank is going up to 85 degrees. Is that too hot?

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