Exotic fish dry goods include filtration media, water treatment products, and specialist feeding supplies essential for arowana, stingray, and bichir keepers. At MTF-Aquatics, we recommend a three-layer filtration approach (mechanical, biological, chemical), Seachem-brand water conditioners, and premium carnivore pellets like Hikari Massivore Delite to replicate the care these high-bioload species demand.
Generic aquatics shops stock one or two brands of filter media and call it a day. For keepers of large, messy predators, that approach guarantees failure. Arowana, stingrays, and bichirs produce bioloads that overwhelm undersized filters and create toxic ammonia spikes within days. The wrong substrate physically injures stingrays. The wrong water treatment leaves fish in chlorinated tap water. The wrong food introduces parasites or nutritional deficiency.
Exotic fish dry goods are not luxury add-ons — they are the foundation of a viable setup. Without them, even premium livestock will struggle.
A 6 ft × 2 ft stingray tank (approx. 600 litres) can accumulate 8–12 grams of ammonia per day from one fish. Your filtration must intercept, break down, and remove that waste before it becomes toxic. This requires both volume and quality of media.
The three-layer approach is the standard among serious keepers and is essential for exotic fish dry goods setups:
Seachem Matrix is the top choice for exotic fish dry goods because of its exceptional surface area. Matrix provides over 700 m² of surface area per litre — equivalent to roughly 170 litres of plastic bio-balls. For a 600-litre stingray or arowana tank, this density matters: you need less space devoted to media while maintaining robust bacterial colonisation.
Alternatives include:
For exotic fish dry goods, Matrix is worth the premium cost because a single batch lasts years.
Before water reaches your biological media, it must pass through mechanical stages. This is where filter floss, coarse sponge pads (20 ppi), and fine polyfibre pads (100+ ppi) come in. These intercept solid waste — uneaten food, faeces — preventing bio-media from clogging.
For exotic fish dry goods, generous mechanical prefiltration is non-negotiable. We recommend at least two mechanical stages in a sump or canister setup:
This extends the life of your expensive biological media and improves water clarity.
Chemical media removes dissolved organics, excess tannins, and provides emergency ammonia buffering:
For exotic fish dry goods, Purigen is the standout: one packet can be used, then recharged with bleach and reused indefinitely, making it cost-effective for long-term setups.
Seachem Prime is the foundational water treatment in exotic fish dry goods. It:
Every water change requires a dose of Prime — non-negotiable for tanks housing stingrays, which are acutely ammonia-sensitive. UK tap water contains dissolved chlorine; untreated water causes gill damage and stress-driven disease.
Seachem Stability is a bottled bacterial culture containing live nitrifying bacteria. For exotic fish dry goods, it serves two purposes:
This is especially critical for stingray keepers, who often perform 30–50% water changes weekly. A dose of Stability after each change is insurance against ammonia crashes.
Wild-caught South American species — black arowana and stingrays — thrive in acidic, soft blackwater. Creating this in the UK requires exotic fish dry goods specifically designed for water conditioning:
For a black arowana or imported stingray, your target is pH 5.5–6.5, dGH 0–4. This cannot be achieved with untreated UK tap water (pH 7.5–8.0, dGH 8–15). These exotic fish dry goods are essential, not optional.
You cannot manage water chemistry without testing. For exotic fish dry goods setups, invest in a comprehensive kit covering:
Liquid test kits (e.g., API Master Test Kit, Salifert) are more accurate than strips. For exotic fish dry goods, accuracy is not negotiable.
Hikari Massivore Delite is specifically formulated for large bottom-feeding carnivores: bichirs, stingrays, and large catfish. The pellets are extra-large (8–10 mm), sink reliably, and deliver 46–47% crude protein with whole-food ingredients (krill, squid, fish meal).
Why Massivore matters for exotic fish dry goods:
For bichirs and stingrays, Massivore is the cornerstone of any feeding protocol.
Arowana are surface-strikers and require floating pellets or sticks:
Arowana will also consume whole prey (prawns, small fish, earthworms), but pellets form the staple. Rotating between pellets and frozen/fresh whole food prevents nutritional deficiency and keeps feeding behaviour stimulating.
For all exotic fish dry goods feeding protocols, supplement pellets with frozen or fresh foods:
A varied diet prevents deficiency and mimics the natural feeding behaviour of these species.
Stingrays must have fine sand (0.3–1 mm particle size). Coarse gravel causes abrasion to their ventrums (belly) and barbels, leading to chronic stress and secondary infection.
Fine play sand or pool filter sand (from DIY stores) are ideal and cost-effective. Rinse thoroughly before use to remove silt. For a 600-litre tank, budget 40–60 kg of sand.
This is a one-time exotic fish dry goods expense but absolutely critical to stingray welfare.
Bichirs also prefer fine sand, particularly if you plan to keep live plants or driftwood. Sand allows them to rest on the bottom without discomfort and supports their natural benthic behaviour.
Arowana can be kept on sand or bare-bottom (easier cleaning). Many keepers use minimal substrate to simplify maintenance and water changes.
For stingrays and blackwater arowana, driftwood is not decoration — it is functional:
Soak new driftwood for 2–3 weeks before use to release excess tannins and prevent the initial tannin explosion that can drop pH too fast.
If you’re creating a lightly planted arowana setup, spider wood allows plants to attach and adds visual complexity without compromising water flow.
Here’s a practical starting point for a 600-litre stingray or large bichir setup:
| Category | Product | Purpose | Quantity/Size |
|---|---|---|---|
| Biological Media | Seachem Matrix | Primary biofilter | 2–3 litres |
| Mechanical Media | Filter floss + 100 ppi pads | Prefiltration | 2 boxes + 5 pads |
| Chemical Media | Seachem Purigen | Organic removal | 1 packet |
| Dechlorination | Seachem Prime | Tap water treatment | 100 ml bottle |
| Bacterial Culture | Seachem Stability | Biofilter support | 1 bottle |
| pH Conditioning | Catappa leaf extract or peat | Blackwater pH drop | 1 bottle |
| Feeding | Hikari Massivore Delite | Daily feeding (bichir/stingray) | 1 kg bag |
| Feeding | Hikari Arowana Large Sticks | Daily feeding (arowana) | 1 kg bag |
| Substrate | Fine play sand | Stingray substrate | 50 kg |
| Test Kit | API Master Test Kit or Salifert | Water chemistry | 1 kit |
For species-specific care parameters and setup guidance, visit our care guides hub, where we cover arowana, stingray, and bichir requirements in depth. Each guide includes temperature, pH, hardness, tank dimensions, and feeding protocols tailored to the species.
If you’re unsure which exotic fish dry goods suit your setup, browse our transhipping service or request a species consultation — we’re fishkeepers first, retailers second, and happy to discuss your specific needs before you commit to anything.
Seachem Matrix offers the highest surface area per litre (700+ m²/L), making it ideal for high-bioload monster fish. Kaldnes K1/K3 moving-bed media is an excellent alternative if you’re using a sump with aeration. Ceramic rings are cheaper but deliver lower surface area.
Yes. Chemical media (Purigen, carbon, zeolite) removes dissolved organics that biological filtration cannot touch. In monster-fish tanks where waste production is extreme, chemical media prevents nitrate accumulation and keeps water crystal-clear.
Standard aquarium sand (0.5–2 mm) can work, but fine play sand (0.3–1 mm) is safer and less likely to cause substrate abrasion. UK pool filter sand is ideal because it’s inexpensive and has a tight grain size. Always rinse thoroughly before use.
Massivore is safer and more nutritious. Live feeder fish introduce parasites (tapeworms, flukes) and bacteria. Massivore pellets are parasite-free, deliver consistent nutrition, and cost less over time. Live food can be a supplement, but pellets should form the staple.
Biological media (Matrix, ceramic rings) lasts indefinitely — never replace it. Mechanical media (filter floss, sponges) needs replacement or cleaning every 1–2 weeks. Chemical media (Purigen) is regenerable; activated carbon lasts 4–6 weeks before replacement.
Most exotic fish (arowana, stingrays, bichirs) thrive at 24–28°C. Ensure your heater and chiller (if needed) can maintain this range. Water-treatment products (Prime, Stability) work across this range without issue. Test kits should cover pH, ammonia, nitrite, nitrate, and hardness — essential parameters at any temperature.
Seachem Matrix offers the highest surface area per litre (700+ m²/L), making it ideal for high-bioload monster fish. Kaldnes K1/K3 moving-bed media is an excellent alternative if you’re using a sump with aeration. Ceramic rings are cheaper but deliver lower surface area.
Yes. Chemical media (Purigen, carbon, zeolite) removes dissolved organics that biological filtration cannot touch. In monster-fish tanks where waste production is extreme, chemical media prevents nitrate accumulation and keeps water crystal-clear.
Standard aquarium sand (0.5–2 mm) can work, but fine play sand (0.3–1 mm) is safer and less likely to cause substrate abrasion. UK pool filter sand is ideal because it’s inexpensive and has a tight grain size. Always rinse thoroughly before use.
Massivore is safer and more nutritious. Live feeder fish introduce parasites (tapeworms, flukes) and bacteria. Massivore pellets are parasite-free, deliver consistent nutrition, and cost less over time. Live food can be a supplement, but pellets should form the staple.
Biological media (Matrix, ceramic rings) lasts indefinitely — never replace it. Mechanical media (filter floss, sponges) needs replacement or cleaning every 1–2 weeks. Chemical media (Purigen) is regenerable; activated carbon lasts 4–6 weeks before replacement.
Most exotic fish (arowana, stingrays, bichirs) thrive at 24–28°C. Ensure your heater and chiller (if needed) can maintain this range. Water-treatment products (Prime, Stability) work across this range without issue. Test kits should cover pH, ammonia, nitrite, nitrate, and hardness — essential parameters at any temperature.
