Best Size Tank For 1 Betta Fish – Top 7 Picks and Reviews 2020

We went over the consumer reviews and found the best of the best using advanced technology.

Here’s a look at the best Size Tank For 1 Betta Fish

Bestseller No. 1
DaToo 10 Watt Small Aquarium Heater Mini Betta Flat Fish Tank Heater for 1 Gallon 1.5 Gallon
  • PERFECT MINI HEATER FOR 1~1.5 GALLON TANK - For a Betta breeder with a 1 to 1.5 gallon small tank, it is very difficult to choose a suitable heater. Because most of the heaters on the market are too big for this small tank. This not only affects us to watch our beautiful Betta, but also reduces the activity space of the Betta. Now DaToo Mini Aquarium heater can help you solve this problem. Ultra-small and thin size, perfectly hidden in a 1~1.5 gallon tank, your Betta will be happy with it! !
  • CONSTANT TEMPERATURE & NO NEED TO ADJUST - DaToo 10W MINI Aquarium Heater can automatically maintain a constant temperature between 75°F and 82°F (depending on the external environment), no need to set. This temperature range is ideal for most tropical fish and is very beneficial for the reproduction of betta and promotes their metabolism. With no extra work, just plug it in and the DaToo 10Watt Small Fish Tank Heater will help your fish stay healthy and comfortable. Great for kids!!
  • 24V SAFE VOLTAGE & POWER OFF AFTER LEAVING WATER - The output voltage of the DaToo Betta Heater is only 24V, which not only ensures the safety of the fish, but also ensures the safety of the user. No need to worry about leakage, you can rest assured to use it for your children. The Betta heater needs to be completely submerged in the water. If it leaves the water, it will automatically stop heating to prevent dry burning (heating indicator is green), which is very safe.
  • PTC HEATING & ONLY SUITABLE FOR FRESHWATER - Unlike conventional glass aquarium heaters, PTC has better thermal conductivity and heating rate, no explosion, no breakage. Very energy efficient and environmentally friendly. Your child can operate it easily and is very safe. This mini fish tank heater is only suitable for fresh water tanks.
  • ATTENTION & ONE YEAR WARRANTY - This is 10W MINI Aquarium Heater, size is 3*2*0.26 inch, fit 1~1.5 gallon small tank. Only for fresh water tanks. One Year Warranty and 100% Money-back Guarantee. Buy DaToo products with confidence. JUST DO IT, Let’t Go!!
SaleBestseller No. 2
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display
356 Reviews
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display
  • ★ Temperature range: 59°F~94°F, display Fahrenheit °F, this heater is designed for1~10 gallons tank.
  • ★ Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.
  • ★ Touch button, cyclic adjust temperature , easy to use and Safety.
  • ★【Note】:this heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.
  • ★【SATISFACTION GUARANTEED】Gain the confidence to go hard with us! Our Aquarium Heater is built with durability in mind and safety for every design, In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
SaleBestseller No. 3
PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks
1 Reviews
PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks
  • ★【Betta Heater】This Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.
  • ★【Quick and Easy Installation】:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78℉, no need to adjust temperature, easy to operate, fishes happy.
  • ★【How it Works】: Plug in, red light turns on, the heater will start working until water temperature up to 78°F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78°F. Accuracy:±3°F
  • ★【Note】: Do not operate or leave product plugged in when it is outside of water, Children should be use this heater under adult's guidance.
  • ★【SATISFACTION GUARANTEED】Our Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
Bestseller No. 4
Aqueon Betta Fish Tank Starter Kit, Half Gallon, Blue
131 Reviews
Aqueon Betta Fish Tank Starter Kit, Half Gallon, Blue
  • Low-maintenance, economical kit to get you started
  • Half gallon betta aquarium includes divider for housing up to two betta per aquarium
  • Easy-open feeding door allows for feeding betta without taking the entire lid off
  • Aquarium plant, gravel, and samples of food & water care included!
  • Aqueon Mini Heater or Flat Heater recommended
SaleBestseller No. 5
Marina Betta Fish Submersible Heater for Fish Tank Aquarium, 1.5 gallons, 11182
803 Reviews
Marina Betta Fish Submersible Heater for Fish Tank Aquarium, 1.5 gallons, 11182
  • 8-watt submersible fish tank heater for aquariums up to 1.5 gallons (5 L)
  • Creates ideal conditions for bettas to live in
  • Made of durable polymer, which is tougher than glass
  • Easy to install in your betta fish tank; use the suction cups to place on the side of the betta tank
  • Automatically reaches set temperature; allowing you to easily maintain your fish aquarium
SaleBestseller No. 6
Aqueon Mini Bow Replacement Filter Cartridges Small (3 pk)
637 Reviews
Aqueon Mini Bow Replacement Filter Cartridges Small (3 pk)
  • Fits Aqueon QuietFlow Filter: E Internal 10 gallon
  • Ready-to-use cartridge contains high quality activated carbon that keeps water clean, rinse before replacing
  • Installs in seconds: align cartridge bottom key slot for an accurate fit inside the Filter
  • For optimal performance, change approximately every 4 to 6 weeks
  • Do not clean Bioholster when replacing the cartridge as it contains beneficial biological bacteria
Bestseller No. 7
Tetra LED Betta Tank Kit 1 Gallon, Trapezoid aquarium With Base Lighting (24050)
  • Age Range Description: All Life Stages
  • Included Components: Tetra Led Betta Tank With Base Lighting, 1-Gallon, 7.25 X 9.5 X 8.5
  • Made by Tetra
  • The lid features a convenient feeding hole