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Official Manaus Octocil 20ml treatment for label-directed intestinal flagellate care in ornamental freshwater fish.
Official Manaus Octocil 20ml treatment for label-directed intestinal flagellate care in ornamental freshwater fish.
Manaus Octocil 20ml is an official Manaus-Aquarium treatment for ornamental freshwater fish where intestinal flagellates are the suspected problem and the product label calls for Octocil. This is not a general water conditioner or a routine maintenance additive. It is a specialist aquarium medication supplied as a liquid solution for adding to aquarium water, so it should be bought and used with the same care you would apply to any fish-health treatment.
The manufacturer describes Octocil as a treatment for intestinal flagellates in freshwater ornamental fish, including parasites such as Cryptobia, Hexamita, Protoopalina, Spironucleus and Trichomonas. These problems are often discussed by aquarists in relation to cichlids, especially Discus and Angelfish, where intestinal flagellate issues may be associated with poor feeding, white slimy faeces, darkened colour, skittish behaviour and hole-in-the-head type symptoms. Symptoms alone are not a diagnosis, so use the leaflet carefully and seek expert aquatic advice when you are unsure.
This listing is for the 20ml bottle format. The official Manaus leaflet gives the administration route as a solution added to aquarium water, with a label dose of 1ml per 20 litres. On that label dose, a 20ml bottle is suitable for up to 400 litres of treated aquarium water. Always calculate the real water volume of the aquarium, allowing for décor, substrate and unusual tank shapes, before dosing.
| Brand | Manaus-Aquarium |
|---|---|
| Product | Octocil |
| Size supplied | 20ml |
| Product type | Freshwater ornamental fish medication |
| Administration | Liquid solution added to aquarium water |
| Label dose | 1ml per 20 litres of aquarium water |
| Target use | Intestinal flagellates in ornamental fish, according to the manufacturer leaflet |
| SKU | E053 |
Octocil is most relevant when you are dealing with fish-health signs that match the manufacturer's flagellate guidance and you have ruled out basic husbandry issues such as poor water quality, unstable temperature, unsuitable diet or bullying. The Manaus leaflet lists symptoms such as white slimy faeces, darkened skin colour, fish becoming easily startled and affected fish stopping feeding. Those signs can overlap with other problems, so it is sensible to check water parameters and, where possible, confirm the issue before treating.
The official leaflet says intestinal flagellates live in the low-oxygen environment of the intestine and names several genera, including Cryptobia, Hexamita, Protoopalina, Spironucleus and Trichomonas. It also links heavy infestation with nutrient loss, undernourishment and mineral imbalance. For hobbyists, the practical message is simple: do not use Octocil casually, but do keep it in mind as a targeted product when label-directed flagellate treatment is genuinely needed.
Read the bottle and leaflet fully before using Octocil. The manufacturer advises paying attention to water quality and reducing organic pollution through regular water changes. Very dirty filters should be cleaned before treatment, but the aquarium filter should remain running during treatment. Good circulation and oxygenation matter, because the treatment needs to disperse properly through the aquarium water and unwell fish are already under stress.
The Manaus leaflet says Octocil should not be used in combination with other medications. If another medication has been used beforehand, the leaflet advises a major water change of at least 80% before treatment. During treatment, UV lamps should be turned off, oxidators removed, and active filter media such as activated carbon, phosphate remover and ion-exchange resins should not be used because they can interfere with the treatment.
The leaflet also gives a maximum treatment temperature of 29C and says the treated tank should not be greater than 1000 litres. It notes variable success with cartilaginous fish such as freshwater stingrays and says Octocil should not be used with those fish as a precaution. If your aquarium contains sensitive species, invertebrates, unusual fish or a mixed community, check suitability before treating the whole display tank.
The official English leaflet gives a dose of 1ml per 20 litres of aquarium water. It says to use the measuring cup, distribute the medication on the water surface and mix the aquarium water thoroughly so the medication is dispersed. Treatment is described as complete on the sixth day, followed by a major water change of at least 60% of the aquarium water. In stubborn cases, the leaflet says treatment can be repeated after a one-week break, with an 80% water change before the fresh course.
This dosing outline is included so you can recognise the product and plan responsibly; the bottle and current leaflet remain the authority. Never dose by guesswork, never mix medications unless a qualified professional tells you to, and never treat animals intended for human consumption. Octocil is for ornamental fish treatment only.
Store Octocil in its original packaging, protected from light, heat and frost, and keep it out of reach of children. The official leaflet says the product may stain if spilt and can irritate eyes. If it contacts the eyes, rinse for several minutes under running water. The leaflet also says shelf life after opening is 12 months, but you should always follow the expiry and storage information printed on your own bottle.
This listing uses the exact official Manaus Octocil product image and manufacturer information, not a generic aquarium-supplies description. That matters for a medication-style product, because the buyer needs to know what the product is, when it is relevant, and which label cautions are important before adding it to the aquarium. We have kept the product identity clear: Manaus Octocil, 20ml, SKU E053, for ornamental freshwater fish treatment according to the manufacturer's leaflet.
If you are restocking a fish-health cupboard, match this product against the issue you are trying to solve and read the leaflet before use. For nearby planning, you may also want to compare Esha Transport Liquid 500ml for transport-water conditioning or Water Treatment Multimedical 1.5L for broader water-treatment shopping. These are not substitutes for diagnosis; they are useful comparison pages when organising your aquarium care kit.
The manufacturer describes Octocil as a treatment for intestinal flagellates in ornamental freshwater fish, including organisms such as Cryptobia, Hexamita, Protoopalina, Spironucleus and Trichomonas.
No. It is a medication-style aquarium treatment, not a routine conditioner or general maintenance additive. Use it only when the label guidance matches the situation.
The official English leaflet gives a dose of 1ml per 20 litres of aquarium water. Always calculate the real water volume and follow the current bottle and leaflet.
The Manaus leaflet says Octocil should not be used in combination with other medications. If another medication was used beforehand, it advises at least an 80% water change before treatment.
Yes. The leaflet says UV lamps should be turned off, oxidators removed, and active filter media such as activated carbon, phosphate remover and ion-exchange resins should not be used during treatment.
The leaflet lists ornamental fish as the target species but cautions against use with cartilaginous fish such as freshwater stingrays. Check suitability for sensitive species before treating a mixed aquarium.
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