ERAARK 15.1 L Betta Fish Tank with App Control, LED Light and Filter

The ERAARK 4 Gallon Betta Fish Tank is an app-controlled aquarium designed to support a betta fish setup, with adjustable water flow and integrated LED lighting.

• 4-gallon aquarium — offers a dedicated tank for a betta fish setup.
• App-adjustable light color and water flow — lets you customize two aquarium settings.
• Physical and biological filtration with filter cotton — filters impurities and fish waste from the water.
• LED lighting with customizable modes — supports scheduled lighting and simulated daylight transitions.
• Aquarium, LED light, filter, water pump, and instruction manual included — provides the listed aquarium components in one set.

This aquarium brings lighting, water movement, and filtration together in a single setup. Its adjustable settings are designed for owners who want to tailor the aquarium environment through an app, while the filtration system works to maintain a clean aquatic environment. The brand also describes the aquarium’s settings as supporting fish growth.

What can I adjust through the app?

You can adjust the aquarium’s light color and water flow through the app. The LED system also lets you schedule lighting cycles and simulate natural daylight transitions, so lighting can be set to follow a planned cycle rather than changed only by hand.

• Choose from multiple LED lighting modes.
• Set lighting schedules through the dedicated app.

How does the aquarium filter work?

The upgraded filter uses physical and biological filtration, with multiple pieces of filter cotton to capture impurities and fish waste. The filter also produces bubbles and water flow to provide oxygen for the fish, and its operation is described as near-silent.

• Filtration combines physical and biological methods.
• Bubbles and water movement are part of the filter’s operation.

What comes with the ERAARK aquarium?

The set contains the aquarium, an LED light, an aquarium filter, a water pump, and an instruction manual. Fish, sand, and stones are not included, so those are separate from the listed set contents.

• Included: aquarium, LED light, filter, water pump, and manual.
• Not included: fish, sand, and stones.

The ERAARK tank is suited to betta fish owners who want app-based control of aquarium lighting and water flow alongside built-in filtration. Its 4-gallon capacity and included light, filter, and water pump define the setup.

Read our guide: Aquascaping a freshwater tank: substrate, stone, wood and light