Extra-Large Indian Catappa Almond Leaves (20 Pack)

Catappa Indian Almond Leaves are one of the most trusted and widely used aquarium botanicals in the world, and for good reason. At Castle Dawn Aquatics, we use Indian Almond Leaves religiously with both our wild and domestic Betta species, as well as in shrimp tanks and blackwater breeding systems.

Renowned for their powerful antibacterial properties, Catappa leaves release humic acids and high levels of tannins that naturally lower pH, soften water, and create ideal blackwater conditions. These benefits make them indispensable for Bettas, South American cichlids, shrimp, and other soft-water species.

Our XL Catappa leaves, measuring just under 30 cm, are perfectly suited for larger aquariums, offering extended longevity, strong tannin release, and excellent surface area for biofilm development.

Tannins Released: High

As with all our botanicals, these leaves are organically sourced, completely chemical-free, and naturally sun-dried without the use of ethanol.

Our leaves are cosmetically varied, exactly as nature intended. Colour, shape, size, and appearance will vary naturally.

Key Features and Important Notes:

• What’s Included:
  – 1 × XL Catappa Indian Almond Leaf
  ⚠️ For aquarium use only. Not for human consumption.
• Average Size:
  Approx. 25 cm
• Source:
  Thailand
• Flora:
  Terminalia catappa
• Powerful Antibacterial Properties:
  Helps reduce common aquarium pathogens and supports overall fish health.
• Blackwater Conditioning:
  Releases humic acids and tannins that naturally soften water and gradually lower pH.
• Ideal for Bettas & Breeding Setups:
  Promotes fin growth, enhances colouration, and supports natural spawning behaviour.
• Biofilm Development:
  Creates a natural grazing surface for shrimp and fry through biofilm formation.
• XL Size for Larger Aquariums:
  Long-lasting leaf is ideal for medium to large tanks and extended conditioning.
• Naturally Fallen Leaves:
  Collected only after falling naturally. Leaves are not harvested prematurely.
• Preparation:
  Boil for 30 minutes, then soak in cold water overnight before adding to your aquarium.
• Organic & Safe:
  Organically sourced, naturally sun-dried, and free from pesticides, ethanol, or chemical treatments.
• Natural Variation:
  As a natural product, colour, size, and texture will vary from leaf to leaf.
• Conservation Support:
  Part of the Wild Betta Rescue Programme. Every purchase supports conservation work across Southeast Asia.