Ludwigia Repens: A Comprehensive Guide for Aquarists

Ludwigia repens, a vibrant and versatile stem plant, is a cherished addition to freshwater aquariums. Known for its striking red and green foliage, it originates from the Americas and offers a splash of colour and texture to aquatic landscapes.

Origin and Natural Habitat

Ludwigia repens is native to North and Central America, where it thrives in a variety of wet habitats. This adaptability makes it an excellent choice for different aquarium setups, from standard community tanks to intricate aquascapes.

Growth Characteristics

Growth Rate

This plant exhibits a moderate to fast growth rate, allowing for quick establishment and filling in of the background or midground of an aquarium. The colouration of its leaves can range from deep green to vibrant red, depending on the light and nutrient conditions provided.

Lighting Requirements

Ludwigia repens requires moderate to high lighting to develop its full-colour potential. Higher lighting levels will encourage the leaves to turn a more vivid red, while lower light conditions will result in more green growth.

Water Conditions

It is adaptable to a wide range of water parameters but prefers temperatures between 22°C to 28°C and a pH of 6.0 to 7.5. Soft to moderately hard water is ideal for promoting healthy growth and vibrant coloration.

Planting and Maintenance

Ludwigia repens should be planted in nutrient-rich substrate to support its fast growth. It can be easily trimmed and shaped to suit your aquascape design. Regular pruning not only encourages bushier growth but also prevents the lower leaves from being shaded out and dropping off.

Fertilisation and CO2 Supplementation

For the most vibrant colouration and optimal growth, supplementing with CO2 and a comprehensive liquid fertilizer containing iron and other micronutrients is beneficial. These additions will enhance the overall health and appearance of the plant.

Propagation

Propagation is simple: cut the top portion of a healthy stem and replant it in the substrate. The original stem will often produce new side shoots, while the replanted cutting quickly establishes roots, allowing for rapid expansion of the plant within the aquarium.

Benefits in the Aquarium

Beyond its aesthetic appeal, Ludwigia repens provides shelter for fish and invertebrates, contributes to water quality by absorbing excess nutrients, and offers breeding sites for certain fish species.

In conclusion, Ludwigia repens is an attractive, easy-to-grow aquatic plant that can add depth, colour, and texture to any freshwater aquarium. With proper care, it becomes a stunning focal point, enhancing the beauty and biodiversity of the aquatic environment.