Dried Catappa leaves (Terminalia catappa, Indian almond)

Catappa Leaves: The Benefits of Indian Almond Leaves for Aquariums

Catappa leaves are the dried leaves of the Terminalia catappa tree, commonly known as the Atlantic almond or Indian almond. This tropical tree is widely distributed in Southeast Asia and other tropical regions.

They are particularly prized in Triops breeding and in aquariums in general for their many benefits and their ability to recreate a natural environment.

Role of Catappa Leaves in Triops Breeding

1. Water Conditioning

Catappa leaves release tannins, humic acids, and other organic compounds when immersed in water. These substances slightly lower the pH (around 6.5-7.0), creating a mildly acidic environment that mimics the conditions in the temporary pools where Triops live. This pH is ideal for many Triops species, promoting their metabolism, reproduction, and general well-being. The tannins also give the water an amber tint, replicating the natural appearance of their habitat.

2. Stimulation of the microflora

As they slowly decompose, catappa leaves enrich the water with organic matter, which stimulates the growth of microorganisms such as bacteria, infusoria, and unicellular algae. These microorganisms are an interesting food source for Triops larvae (nauplii) during their first days of life (0-5 days). Thus, catappa leaves indirectly support the nutrition of young Triops by promoting a rich microbial ecosystem.

3. Antibacterial and antifungal effect

The tannins and other phenolic compounds in catappa leaves have natural antibacterial and antifungal properties. These properties help reduce the proliferation of pathogens in the water, which is particularly important in small breeding tanks (5-10 liters) where Triops are susceptible to bacterial or fungal pollution. This helps maintain healthier water and minimize the risk of infections, especially during moulting periods when Triops are more vulnerable.

4. Improved Behavior and Stress

The amber color of the water and the organic compounds released by the leaves create an environment that mimics temporary pools rich in organic matter. This reduces stress in Triops, promotes their burrowing behavior, and encourages natural exploratory activity.

5. Support for Molting

Catappa leaves release small amounts of calcium and other minerals, which can aid in the calcification of the Triops' exoskeleton after their frequent molts (every 1-3 days for juveniles, 1-2 weeks for adults).

Practical Use in Triops Husbandry

• Preparation: Catappa leaves should be rinsed in clean water before use to remove impurities. They can be immersed whole or in fragments in the tank.
• Dosage: Use 1 leaf for 5 to 10 liters of water. A whole leaf may be sufficient for a small tank, but monitor the effect on the pH to avoid excessive acidity.
• Duration: The leaves can remain in the tank for 1 to 2 months, until they have completely decomposed. Replace them as needed, making sure to remove any excessively degraded fragments to avoid organic overload.
• Compatibility: Catappa leaves are suitable for all Triops species (australiensis, longicaudatus, cancriformis, granarius, newberryi, mauritanicus, numidicus, gadensis, vicentinus, mongolia, etc.), as they replicate the natural conditions of their temporary habitats.

Precautions

• pH Monitoring: Regularly test the pH (ideally 6.5-7.5) with a test kit, as too much acidity (pH <6.0) can stress or harm Triops, especially species like Triops cancriformis that prefer slightly more neutral waters.
• Organic Loading: Excessive leaves or uncontrolled decomposition can increase organic matter, leading to water pollution. Perform partial water changes (10-20% per week) to maintain water quality.
• Leaf Origin: Use food-grade, pesticide- and chemical-free catappa leaves, like the ones we offer. Avoid wild-harvested leaves without purity testing.
• Interaction with Food: The leaves are not a substitute for direct food (spirulina, pellets, daphnia). They act as a complement to enrich the tank's ecosystem.