10 Gallon Divided Betta Tank Setup: A Beginner's Guide

This beginner's guide walks you through setting up a thriving 10-gallon divided betta tank, perfect for housing two male bettas without the territorial aggression that often occurs in a single tank. We'll cover every step, from substrate selection to plant choices and essential equipment, ensuring a visually appealing and healthy environment for your finned friends. This guide emphasizes simplicity and effectiveness, making it ideal for novice aquarists looking to create a stunning and functional habitat.Learn how to select the right substrate, featuring a combination of Fluval stratum for live plants and black gravel for visual contrast. Discover our recommended plant choices, including Lililia cardinalis, Amazon sword, and Anubias, and how to strategically place decorations to create a unique and engaging environment on each side of the divider. We'll also cover essential equipment like fully cycled sponge filters and heaters, and the importance of water conditioning, ensuring a healthy and comfortable home for your bettas.

Read more: Fish Tank Dividers: A Comprehensive Review of Types and Uses

Substrate and Base Layer

For the substrate, I chose Fluval stratum, an excellent choice for live plants. Remember to rinse it thoroughly but gently using a slow stream of water to prevent damage. This ensures the stratum doesn't break down during the setup process. A thin layer of black gravel was added on top for a nice contrast and to anchor some of the plants. This adds visual depth to the tank without overpowering the plants.

Close-up of the Fluval stratum being added to the tank
Close-up of the Fluval stratum being added to the tank
The black gravel layer being added on top of the Fluval stratum
The black gravel layer being added on top of the Fluval stratum

Planting and Filtration

I selected a variety of plants, including Lililia cardinalis, Amazon sword, and Anubias. These offer different textures and growth patterns, creating a visually appealing environment. Each side of the divided tank received its own plants and a fully cycled sponge filter, ensuring a healthy environment for the bettas. This provides effective filtration without disturbing the peace of the inhabitants.

Close-up of the Lililia cardinalis plant
Close-up of the Lililia cardinalis plant
Anubias being added to the tank
Anubias being added to the tank
The fully cycled sponge filter
The fully cycled sponge filter

Decorations and Water Parameters

Several decorations were strategically placed to enhance the tank's aesthetic appeal. Anubias were attached to a decorative tree. The water was treated with a conditioner (Prime) to neutralize chlorine and chloramine. Heaters were added, necessary given the cooler temperatures, ensuring the betta's thrive in a comfortable environment.

Anubias attached to a decorative tree
Anubias attached to a decorative tree

I waited for the water to settle before carefully introducing the bettas to their new homes, allowing them to adapt gradually.

Adding the heater to the tank
Adding the heater to the tank

Final Touches and Conclusion

After the initial setup, I added more plants and decorations to fine-tune the aesthetics. The result is a beautifully balanced and thriving 10-gallon divided betta tank, providing a comfortable home for two bettas. Each side offers a unique look, showcasing the versatility of this setup. The overall setup is simple yet effective, perfect for beginners looking to create a stunning betta habitat.

The completed divided tank
The completed divided tank

The choice of Fluval stratum for the substrate and the inclusion of fully-cycled sponge filters demonstrate a commitment to creating a thriving environment. The addition of heaters highlights the adaptability of the setup to different climates.