Description
ANS Catappa Leaves Small – Indian Almond Leaves (IAL) for Betta, Shrimp & Blackwater Aquarium
Create a healthier and more natural environment in your aquarium with ANS Catappa Leaves (Small). Also known as Indian Almond Leaves / Ketapang Leaves (IAL), these leaves slowly release tannins and humic substances that support blackwater conditions, help reduce stress, and promote better overall tank comfort for shrimp and softwater fish.
Natural Tannins + Blackwater Effect – Releases tannins that create a natural “tea tint” blackwater look, commonly preferred for betta and shrimp tanks.
Helps Reduce Stress & Improve Fish Comfort – Catappa leaves are widely used by betta and shrimp keepers to create a calmer environment, especially for new fish or after water change.
Supports Shrimp Grazing (Biofilm Growth) – As the leaf breaks down, it becomes a surface for biofilm and microorganisms that shrimplets love to graze on (natural food source).
Ideal for Nano Tanks (Small Leaf Size) – Small size is perfect for shrimp tanks, betta tanks, nano aquariums and breeders who want controlled tannin release without over-darkening the water.
A) “Betta Ready” & Breeder Favourite – Commonly used for betta setups and breeding tanks because it supports a more natural blackwater environment.
B) Natural Tank Conditioning Without Chemicals – A simple botanical way to improve tank feel and blackwater style without adding strong additives (great for beginner hobbyists).
✅ How To Use ✅
Step 1: Rinse with clean water to remove dust
Step 2: Add 1–2 leaves into tank (small tanks start with less)
Step 3: Replace when leaf breaks down (usually 1–3 weeks depending on tank conditions)
Tip: If you want the leaf to sink faster, soak in warm water for a short while before adding.
📌 Note: Water may turn yellow/brown due to tannins (normal). If you prefer clearer water, reduce quantity or use activated carbon.
📦 What You Receive 📦
1 pack ANS Catappa Leaves Small (Indian Almond Leaves / IAL)
Q1: What are Catappa Leaves used for?
A: They are used to release natural tannins/humic substances that help create blackwater conditions and a calmer environment for betta, shrimp and softwater fish.
Q2: Will the leaves change my water colour?
A: Yes, the water may turn light yellow/brown (tea colour). This is normal and many hobbyists like it. If you don’t want dark water, use fewer leaves or add carbon.
Q3: How many leaves should I put in my tank?
A: Start with 1 leaf for small tanks and adjust slowly. Every tank is different, so monitor water colour and pH.
Q4: How long does one leaf last?
A: Typically 1–3 weeks depending on tank size, water flow, and livestock. Replace when the leaf breaks down.
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ANS Catappa Leaves Small for Nano and Shrimp Setups
The small size suits the nano tanks that dominate local desks and shelves, letting you dial tannin release without over-darkening a few litres of water. We recommend them for cherry and crystal shrimp colonies, betta jars and breeder tanks where controlled, gentle conditioning matters. In our warm 27-29C rooms a small leaf softens and breaks down fairly quickly, so you get a steady trickle of humic substances rather than a sudden flush.
Practically, start conservatively in tiny volumes, perhaps half a leaf, and watch how the water tints before adding more. The decomposing leaf seeds biofilm that shrimplets graze on around the clock, which is genuinely useful in a maturing colony. Because our tap water is already soft and slightly acidic, you usually need fewer leaves here than keepers in harder-water countries to reach a comfortable blackwater feel for the livestock.
Find related botanicals under conditioners and medication. Pair them with our Indian almond leaves guide and biofilm guide, and shrimp keepers should read the shrimp tank setup guide for stocking and water parameters.

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