How much light does Amazon Sword need to grow?

How much light does Amazon Sword Need?

When it comes to creating a diverse and aesthetic aquarium, few plants are as majestic and impressive as the Amazon Sword. Originating from the lush basins of the Amazon River, this plant has become a favorite among aquarists for its vibrant green leaves and robust growth.

One common question for those interested in adding this plant to their aquarium is, “How much light does Amazon Sword need?”. Understanding the lighting requirements, along with other care aspects, is crucial for anyone looking to incorporate this plant into their aquatic ecosystem.

In this guide, we’ll be taking a closer look at one of the best aquarium plants for beginners, discussing its light requirements, benefits, and challenges it may bring to your aquatic environment.

Amazon sword on black background

How much light does Amazon Sword need? Optimal conditions

The Amazon Sword plant, while adaptable, thrives best under moderate to high lighting conditions. Ideally, it should receive between 10 to 12 hours of light per day. This level of illumination encourages healthy growth, ensuring the leaves remain vibrant and full. While the plant can survive in lower light conditions, its growth will be noticeably slower, and the leaves may become leggy as they stretch towards the light source. Inadequate lighting can also lead to pale or yellowing leaves, a sign of stress in the plant.

LED lights, specifically those designed for aquarium use, are a great option for providing consistent and adequate lighting. They are energy-efficient and can be adjusted to simulate natural light cycles, which is beneficial for the overall health of the plant.

Benefits of Adding Amazon Sword to Your Aquarium

Beyond its aesthetic appeal, the Amazon Sword offers several benefits to an aquarium:

  1. Oxygenation: Like all live plants, Amazon Swords contribute to the oxygenation of the water, which is beneficial for fish and other aquatic life.
  2. Natural Filtration: This plant helps in absorbing nitrates and other nutrients from the water, aiding in maintaining a balanced and clean aquatic environment.
  3. Shelter for Aquatic Life: The broad leaves of the Amazon Sword provide excellent hiding spots and breeding grounds for fish and invertebrates.
Amazon sword in tank

Ease of Growth and Suitability for Beginners

One of the most appealing aspects of the Amazon Sword is its ease of growth, making it an excellent choice for beginners. This plant is not particularly demanding when it comes to water parameters and can adapt to a range of conditions. It prefers a pH level between 6.5 and 7.5 and a temperature range of 72-82°F (22-28°C). However, it does appreciate a nutrient-rich substrate to anchor its roots and for optimal growth.

Planting and Maintenance

When planting the Amazon Sword, it’s crucial to ensure that the roots are well-anchored in the substrate, but the crown (where the roots meet the stem) should be above the substrate to prevent rot. The plant will benefit from regular fertilization, either through nutrient-rich substrates or liquid fertilizers.

As for maintenance, trimming is occasionally necessary, especially in well-lit and nutrient-rich conditions where the plant can grow quite large. Trimming helps maintain its shape and size, ensuring it doesn’t overshadow other plants or overtake the aquarium.

Integrating Amazon Sword in Aquascaping

The Amazon Sword is versatile in aquascaping. It’s often used as a background plant due to its height and dense foliage. It can create a lush, green backdrop that highlights other plants or features in the aquarium. When grouping multiple Amazon Swords, it’s important to provide enough space between them to ensure adequate light penetration and circulation.

Potential Challenges

While generally hardy, the Amazon Sword is not without its challenges. It can be prone to algae growth on its leaves, especially if the lighting is too intense or the water contains high levels of nutrients. Regular maintenance and monitoring of water conditions are essential to prevent this issue.

Moreover, in smaller aquariums, the Amazon Sword can grow too large, potentially dominating the space. Regular trimming and proper placement can mitigate this issue.


In conclusion, the Amazon Sword is a splendid addition to any aquarium, offering both aesthetic and environmental benefits. It requires moderate to high lighting, about 10-12 hours daily, for optimal growth. Its ease of care makes it suitable for beginners, while its functionality as a natural water purifier and a provider of shelter and oxygen makes it a beneficial choice for the overall health of the aquarium. With proper lighting, fertilization, and care, the Amazon Sword can be a focal point in your aquatic landscape, bringing a piece of the Amazon’s lushness into your home.

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