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Fritz Mardel Maracyn Oxy – 4 oz

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fritz maractyn oxy

Fritz Mardel Maracyn Oxy – 4 oz


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  • Bacterial inflection remedy for freshwater marine fishes
  • Made in USA

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Fritz Mardel Maracyn Oxy – 4 oz


About Fritz Maracyn® Oxy

For infections of true fungal infections on fish and eggs (whitish tufts of cotton-like material) and bacterial diseases

Fritz Maracyn® Oxy successfully controls fungus infections caused by Saprolegnia, Ichthyosporidium, egg fungus and related species and common bacterial infections. It slowly releases small amounts of a stabilized oxygen-chlorine combination which, when used as directed, has an unusual ability to treat a wide variety of tropical fish diseases. Fungal infections are usually found at the site of an injury or recent attack from parasites. A true fungal infection has a cotton-like appearance similar to a mold found on fruit, bread or cheese, except that on a fish, a fungus is usually white. Fungal infections are very difficult to treat and are usually secondary invaders resulting from an injury on the fish or recent wounds from parasites or bacterial infection. Once the fungus starts growing on the fish, it usually continues to grow and enlarge. Unless medication is provided, death results.

Special note on Fritz Maracyn® Oxy: Fritz Maracyn® Oxy has been shown to be effective against certain gram-negative and gram-positive bacteria.

Fritz Maracyn® Oxy can be used to treat fish exhibiting the following symptoms: clamped fins, swollen eyes, heavy or rapid breathing, patchy coloration or any change in behavior of the fish. All suspected bacterial infections should be treated immediately.

Fritz Maracyn® Oxy is not a toxic material but certain people may have a reaction. Use the following antidotes:

  • External antidote: Flood skin with plenty of water. If irritation persists, get medical attention.
  • For eyes: flood with plenty of water and call a physician immediately.
  • Internal antidote: Drink large quantities of milk. Call physician.

Follow dosage directions as detailed on the product packaging.

Directions & Dosage

The use of a hospital tank is recommended.
It is always wise to check your water quality levels to ensure they are within their acceptable ranges before administering any water treatment.
No water changes, pH or temperature adjustments necessary if readings are in ideal range.
Maintain normal filtration and air.

Use 1/2 capful (2.5 mL) per 10 gallons of water. Repeat as needed for not more than 5 days. It is suggested to always increase tank aeration during treatment to ensure an adequate oxygen supply for sick fish. Switch off UV sterilizers during treatment. Should fish exhibit signs of distress neutralize the medication by using an aquarium dechlorinator, such as FritzGuard®, Fritz A.C.C.R. or Fritz Complete. Follow the manufacturer’s directions for dosing.

Note: Not suitable for use with starfish or related species. Consult a veterinarian or fish expert for assistance in diagnosis of disease causing organisms and treatment options.





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