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Catappa Bark

Catappa Bark

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Amount: 1
Length: 5 Inches
Width: 1 Inch

Sub total:

$8.00

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Botanicals

Catappa Bark

Strips of Indian almond tree bark that release tannins, lower pH, and produce biofilm — a functional botanical with a naturalistic presence shrimp use actively.

Tannin Release pH Buffering Biofilm Producer Shrimp & Fry Safe Naturalistic Aesthetic Soft & Acidic Water Support

Catappa bark is the stripped inner bark of the Indian almond tree (Terminalia catappa) — the same source as catappa leaves, concentrated into a slower-releasing, longer-lasting form. Submerged in the aquarium, the bark leaches tannins and humic acids into the water column gradually, softening water, lowering pH incrementally, and producing the amber-tinted, blackwater quality that Caridina shrimp and other soft-water species thrive in. The bark surface develops a rich biofilm layer as it conditions in the tank, creating a foraging surface that Neocaridina, Caridina, and snails graze methodically and continuously. It softens and breaks down slowly over several weeks to months depending on tank conditions, holding its structure and function significantly longer than catappa leaves — and when it does eventually break down, the decomposing bark becomes a substrate-level foraging resource in its own right. Safe for all shrimp, invertebrates, and fry.

What to Expect

What It Does in the Tank

Releases tannins and humic acids slowly and steadily — catappa bark conditions the water more gradually than catappa leaves, making it better suited to tanks where a consistent tannin contribution over an extended period is more useful than a rapid initial release. The tannin output tapers progressively as the bark ages, giving it a gentler, more sustained effect on water chemistry than leaf-based botanicals of equivalent size. Lowers pH incrementally in soft, low-KH water — the tannins and humic acids released by catappa bark contribute to pH reduction in tanks with low carbonate hardness where the buffering capacity is limited. In tanks with significant KH the effect on pH is minimal — the tannins are consumed by the buffering capacity before they can lower pH measurably. Most impactful in soft-water setups specifically maintained for Caridina or blackwater species. Produces amber water tinting without heavy discoloration — at typical use quantities, catappa bark produces a light amber tint rather than the deep brown associated with heavy botanical loads. The tinting is aesthetically consistent with natural blackwater and peat-influenced habitats and is considered desirable in shrimp and biotope tanks. It can be reduced or eliminated by running activated carbon, though this also removes the water conditioning benefits. Develops a rich biofilm layer that shrimp graze actively — the bark surface accumulates biofilm within days of submersion, and shrimp colonize it quickly and graze it persistently. The textured, fibrous bark surface holds biofilm more effectively than smooth surfaces and continues producing new biofilm as older layers are grazed away, creating a self-renewing foraging resource that remains active throughout the bark's time in the tank. Breaks down slowly — significantly longer than catappa leaves — the denser structure of bark means it holds its physical form for weeks to months rather than the one to three weeks typical of catappa leaves. Larger, thicker pieces last longest. As the bark softens and eventually begins to break apart, the decomposing material becomes substrate-level foraging territory that shrimp and snails work through thoroughly. Pairs naturally with catappa leaves and other botanicals — bark and leaves from the same tree release the same tannin compounds and complement each other in the tank without competing chemically. Using both together produces a layered botanical environment — leaves at the substrate level breaking down more rapidly, bark at mid or substrate level conditioning more slowly — that more closely replicates the varied decomposition stages of a natural forest stream floor.
How to Use It

Getting Started

1 Rinse before adding to the tank — rinse the bark pieces under cool running water before use to remove loose surface debris and dust from storage and shipping. A brief rinse is sufficient — extended soaking or boiling is not necessary and will remove some of the beneficial tannins before the bark even enters the tank.
2 Sink or anchor as needed — fresh catappa bark may float initially before becoming fully waterlogged. Wedging pieces under a small stone, tucking between hardscape elements, or simply allowing a few days for the bark to absorb water and sink naturally are all effective approaches. Avoid forcing it to the bottom in ways that damage the bark structure.
3 Start with a modest quantity and observe — the tannin release from catappa bark is gradual but cumulative. Start with one or two pieces in a standard shrimp tank and observe the water tint and any parameter shifts over the first week before adding more. Tanks with very low KH respond more noticeably to tannin input than buffered tanks — calibrate accordingly.
4 Replace when fully broken down or leave as substrate foraging — once the bark has softened to the point of breaking apart, either remove and replace with fresh pieces or leave the decomposing material as substrate-level foraging territory. Shrimp and snails will continue working through the softened bark for some time after it loses structural integrity. There is no urgency to remove it.
💡 Bonus Tip

Catappa bark is one of the most effective botanicals to use during a Caridina tank setup before shrimp are introduced — adding bark to a cycling tank allows the tannin conditioning to build gradually over several weeks, so by the time parameters are stable and shrimp-ready, the water already has the amber tint, softened chemistry, and established biofilm surfaces that Caridina respond to best on introduction. Starting from a conditioned tank produces noticeably better initial acclimation than introducing shrimp to a freshly set up, botanically bare environment.

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Browse more botanicals

Pair Catappa Bark with Catappa Leaves, Alder Cones, or other botanicals for a complete blackwater setup. Browse our Botanicals collection.

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Policies & Disclaimers
Aquatic botanicals

Policies & Disclaimers

Natural materials, preparation, water effects and the existing terms that apply to your order.

Natural variation & representative photos

Leaves, cones, pods, bark and cholla are natural materials. Pieces can vary in shape, color, thickness, texture and markings. Photographs show examples; they are not a promise of an identical piece or a matched set.

Use the listing and selected option for the quantity and any size range. A pack sold by count is not a standardized weight, and the same number of large pieces can add more material to an aquarium than smaller pieces. Wood, pods and bark also differ from one another in density and structure.

Dry leaves and other delicate materials can be brittle. Small edges, loose fragments or surface irregularities can occur, but this is not a blanket exclusion for damage. If an item appears substantially damaged, incorrect or short, document it and contact us.

Preparation: follow the particular listing

Review the preparation instructions for the exact botanical before adding it. Leaves, bark, cones, pods and wood do not all need the same treatment. Check for loose debris and rinse as appropriate; do not use soap, detergents or scented cleaning products.

Where the product calls for soaking or boiling, follow that guidance and allow material to cool fully before aquarium use. There is no universal boiling time or preparation recipe here. Do not assume preparation makes a natural item sterile or suitable for every species.

Prepare only what you intend to use and assess the material before introduction. If you are uncertain about a smell, coating or unexpected condition in the received package, ask before putting it in an established tank.

Floating, sinking & placement

Dry botanicals can float while they absorb water. Sinking time depends on the material, thickness and preparation; do not assume all pieces will sink immediately or on the same schedule.

Position pieces so they cannot block equipment, obstruct water movement or create an unsuitable tight space for your animals. A decorative shelter still needs to suit the size and behavior of the inhabitants. Check placement again as the material softens or moves.

Tannins, amber water & pH

Many botanicals release tannins and other dissolved organic compounds, which can tint water amber or brown. The amount and speed of release vary by material, preparation, quantity and aquarium maintenance. Color intensity is not a dosing measurement.

Do not use water color as a substitute for testing pH or carbonate hardness (KH). Your water’s buffering capacity affects how it responds. A botanical does not provide a predictable fixed pH reduction or replace appropriate water preparation.

Introduce changes cautiously, especially in low-KH systems. Choose botanicals to suit the inhabitants and monitor actual water conditions rather than adding more to chase a darker color or an advertised visual effect.

Biofilm, softening & decomposition

Once submerged, natural materials become surfaces for microorganisms and gradually break down. A film can develop on wet wood or other botanicals, and shrimp may graze these surfaces. Leaves can soften, develop holes and eventually fragment as part of that process.

The pace differs between leaves, cones, bark, pods and wood. A rapidly softening leaf and a slowly changing piece of cholla should not be expected to last equally long. There is no universal replacement interval for all botanicals.

A film that develops after aquarium introduction should not be confused with visible mold or suspicious contamination inside a dry package. If newly received material appears compromised, photograph it and contact us before use. Do not dismiss every unusual coating or odor as harmless biofilm.

Add gradually & observe the aquarium

Adding a large amount of organic material at once can increase microbial activity and oxygen demand. Start conservatively, maintain water circulation and monitor the aquarium’s response before adding more.

Check water quality and observe your animals. Unexpected cloudiness, odor or distressed behavior calls for investigation, not simply another addition of botanicals. Remove excess decomposing material when appropriate to your tank and maintenance routine.

Botanicals can provide structure and grazing surfaces, but they do not replace filtration, water changes or a suitable diet. They are not a guaranteed treatment for illness or a promise of improved breeding, survival or coloration.

Storage before use

Keep unused dry botanicals dry and protected from moisture and contamination. Avoid storing them where aquarium splashes or condensation can reach the package. Retain the product label and keep different materials identifiable.

Do not put soaked pieces back into the dry supply. Follow any product-specific storage guidance, and ask about newly received material that has unexpected dampness or visible contamination.

Package problems, incorrect items & questions

Inspect your botanicals and its packaging on arrival. If the package is torn, wet, leaking, incorrectly labeled or appears to contain the wrong item or quantity, contact support@superiorshrimpaquatics.com promptly with your order number and clear photos. Include the label, the affected product and packaging so we can understand the concern.

Keep the original packaging and avoid using a product that appears contaminated or compromised while you ask for advice. This is practical documentation guidance, not a new claim deadline or a promise of a particular resolution. A routine unopened return and a report that an item arrived damaged or incorrect are different concerns; tell us which applies.

Existing return terms & exchanges

Food and botanicals are dry goods under our Return Policy. Ordinary returns require prior written authorization and unused, unopened items in their original sealed packaging. Contact us from the email address on your order before sending anything back, and consult the linked policy for its request window and complete eligibility requirements.

The buyer pays return shipping and safe packaging costs. Original shipping charges are non-refundable, and there is no restocking fee. Returned items must arrive in their original condition for inspection.

Approved refunds are processed within 3 business days after receipt and inspection, to the original payment method for the eligible item value. In-store exchanges are available for eligible items with prior written authorization. Promotional, free and final-sale items are subject to the exclusions in the full policy.

Return Policy

Shipping & mixed orders

These products ship as dry goods under our existing shipping practices. Review the delivery address, selected quantity and variant before checkout. Dispatch and delivery timing depend on fulfillment, stock and the selected service; a carrier transit estimate is not a guaranteed ship date.

If your order also includes live animals or plants, review their shipping requirements separately. Adding food or botanicals does not remove the requirements that apply to the live items in that order.

Shipping Information

Live Arrival Guarantee scope

The existing Live Arrival Guarantee covers live animals and aquatic plants. It excludes food, botanicals and other dry goods. The livestock reporting window and bonus-animal rules are not food or botanical product guarantees. For an issue with this item, contact us and refer to the Return Policy above.

Full Guarantee & Coverage

Product-use guidance is separate from store policy. These explanations do not add return exclusions, claim deadlines or guaranteed outcomes. Read the linked policies for complete terms.

    Catappa Bark
    $8.00
    $8.00
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