Tam Giang lagoon, Phu Vang district, Hue, Vietnam

Aquarium information

Aquarium description

Set-up date

June, 2025

Aquarium decoration

I chose Cyperus rotundus as the main plant species to establish both the natural aesthetic and the visual composition of the aquascape. The dense clumps of grass, with their extensive root systems, contribute to a realistic, wild landscape.

The substrate consists of beige sand layered with dried twigs and fallen leaves to closely mimic the natural environment. I arranged three clusters of Cyperus rotundus strategically to create a sense of hierarchy and balance, incorporating natural pathways to enhance both composition and visual appeal.

Aquarium equipment

I chose not to use any filtration equipment in this aquarium. Instead, the only element used to maintain stability is natural sunlight – just as it would be in the wild. Sunlight supports the growth of beneficial bacteria, helping to sustain a balanced and self-regulating ecosystem.

Fish care

For this project, I selected Oreochromis niloticus, a species commonly found in the region. These fish exhibit natural foraging behavior, sifting through the substrate in search of food. During the breeding season, males display a striking red coloration, adding vibrant visual interest to the aquarium.

The tank is placed in a shaded area where the temperature remains consistently between 25-26°C, creating an ideal environment for healthy growth. In addition to being fed once every two days, the fish rely on their instincts to find supplementary food within the tank. Weekly water changes help maintain both a stable microbiome and the overall health of the fish.

Fish list:

• Oreochromis niloticus (Cichlidae)

Crustacean list:

• Perisesarma bidens (Sesarmidae)

Mollusc list:

• Vittina natalensis (Neritidae)

Plant care

Cyperus rotundus serves as the primary plant in the aquascape layout. Receiving natural sunlight daily, it grows vigorously and thrives. However, regular trimming is essential, as its rapid growth can disrupt the visual balance and structure of the aquascape if left unmanaged.

Water care

For the initial setup, I collected water directly from the natural habitat I aimed to replicate in the aquarium. This approach introduced native, beneficial bacteria essential for establishing a balanced ecosystem. To support and stabilize the microbial community, I performed weekly water changes, replacing 30% of the volume with clean, fresh water. This routine helps accelerate bacterial colonization and maintain a healthy, stable environment within the tank.

Dimensions

Length

150 cm

Depth

70 cm

High

40 cm

Volume

420 L