Cacao leaves are useful when you want a natural leaf bed, gentle tannins, shelter, biofilm grazing surfaces and a botanical aquascape look without making the tank too dark.

As the leaves soften in water, they can create micro-zones where shrimp, fry and shy fish feel more secure, while shrimp and snails can graze on the developing biofilm.

What you receive Ceylon Cocoa (Cacao) Leaves / Theobroma cacao Approx. leaf size: 12–20cm, with natural variation. You receive the pack size selected from the menu. Packed dry, small batch and labelled by Blackwater Botanical Aquariums.

Key benefits

1) Gentle tannins Cacao leaves release tannins gradually and usually give a lighter soft yellow or tea tint than heavier blackwater leaves, depending on the setup and quantity used.

2) Leaf bed and cover A cacao leaf bed creates shelter and micro-zones where shrimp, fry and shy fish can behave more naturally.

3) Biofilm grazing surface As the leaves soften they can develop a biofilm layer. Shrimp and snails often graze on this, which is a major part of the leaf-litter aquarium style.

4) Botanical-style enrichment Cacao leaves are natural plant material and can add organic texture, habitat value and a more established botanical look as they break down. Results vary by tank.

5) Natural aquascape texture The large 12–20cm leaves create a bold leaf-litter look and combine well with pods, cones, roots, bark pieces and other blackwater botanicals.

Breakdown and maintenance Cacao leaves are relatively thin and can break down faster than tougher leaf types. This is normal and can add natural organics and biofilm, but in large amounts it may create fine mulm. Use moderately and remove or replace when heavily softened.

Leaf picker guide Best for: shrimp tanks, snails, fry, bettas, tropical fish and botanical aquariums. Tint / tannins: gentle to medium, often a subtle soft yellow or tea tint. Biofilm: good once softened — shrimp and snails can graze naturally. Longevity: medium to faster breakdown than tougher leaves. Look: large natural cacao leaves with green, grey and brown tones.

How to use Rinse before use. Do not use soap or chemicals. Optional and recommended: blanch, pour boiling water over the leaf, or briefly boil to help sinking and reduce the initial release. Allow soaked leaves to cool completely before adding them to the aquarium. Add gradually, especially in small tanks, very soft water or low-KH systems. Expect a thin white biofilm sometimes — this is normal and often eaten by shrimp and snails. Remove or replace leaves when they become heavily softened or if too much fine mulm builds up.

Important notes Natural product: size, shape and colour vary within the 12–20cm range. Some leaves may float at first and sink later. Pre-soaking can help. Botanicals may release tannins and soften the visual tone of the water. Effects vary by tank volume, KH, pH, filtration, water changes and how much is used. Carbon, Purigen and some filtration media may reduce visible tannins and water colour. Botanicals are habitat and enrichment tools, not medicines. Not for human consumption.