Formulation evidence record

Fritz Aquatics Maracyn Oxy

Non-antibiotic oxidising treatment · US formulation

Shrimp

Amano, cherry, crystal and other freshwater shrimp.

Compatible

Snails

Nerite, mystery, ramshorn and other aquarium snails.

Compatible

Live plants

Rooted and floating live aquarium plants.

Caution

Scaleless fish

Loaches, corydoras, plecos, eels and other scaleless species.

Compatible

Marine invertebrates

Corals, anemones, starfish and marine crustaceans.

Caution

Not addressed by the manufacturer for: biological filter. No statement was found, so no verdict is given — that is not a clearance.

Why FishyMag says this

The manufacturer's own wording, quoted rather than paraphrased, so you can judge it yourself.

Shrimp

Manufacturer states compatible

Marked compatible in Fritz's species table. Being non-antibiotic, it also avoids the biofilter disruption that follows the antibiotic products in this range.

“Snails and other invertebrates Yes”

manufacturer page · fritzaquatics.com · checked August 16, 2026

Snails

Manufacturer states compatible

Named directly in the compatibility table as compatible.

“Snails and other invertebrates Yes”

manufacturer page · fritzaquatics.com · checked August 16, 2026

Live plants

Caution

Cleared with the same yellowing caveat Fritz attaches across the Maracyn range.

“Live plants Yes, some species may show yellowing”

manufacturer page · fritzaquatics.com · checked August 16, 2026

Scaleless fish

Manufacturer states compatible

Scaleless species are listed as compatible without a reduced-dose instruction, which is unusual — most treatments hedge here.

“Scaleless species Yes”

manufacturer page · fritzaquatics.com · checked August 16, 2026

Marine invertebrates

Caution

Coral is cleared, but Fritz singles out starfish and related species as not recommended. A blanket reading of the coral row would miss that carve-out entirely.

“Starfish and related species Not recommended”

manufacturer page · fritzaquatics.com · checked August 16, 2026

Product details

Manufacturer states it treats: Fungal infections, External bacterial infections, Wound care
Chemical filtration: Not stated by the manufacturer
Ingredients as stated: Sodium chlorite. Fritz describes it as a non-antibiotic treatment.
Active ingredients: Sodium chlorite

manufacturer page · fritzaquatics.com · checked August 16, 2026

Record last checked August 16, 2026 · confidence high

Check against your tank

Change what is in your tank to see how the answer moves.

1 Choose the treatment

Non-antibiotic oxidising treatment · US formulation

2 Select everything in the tank

Assuming a common community tank. Change the selection, or save your tank so every page answers for it.

Permitted, but with conditions.

The manufacturer stops short of clearing this for something in your tank. Read the detail below before you dose.

This answers for the assumed selection above, not a tank you have described. Adjust it if it is not yours.

ShrimpManufacturer states compatible
Marked compatible in Fritz's species table. Being non-antibiotic, it also avoids the biofilter disruption that follows the antibiotic products in this range.
SnailsManufacturer states compatible
Named directly in the compatibility table as compatible.
Live plantsCaution
Cleared with the same yellowing caveat Fritz attaches across the Maracyn range.

See the manufacturer’s exact wording and sources for Fritz Aquatics Maracyn Oxy →

No evidence found means no manufacturer statement was found — not that the product is safe. FishyMag does not diagnose disease or recommend treatments.

Next steps

Check against my tankSee how Fritz Aquatics Maracyn Oxy and every other treatment compare against what you actually keep.Compare with another treatmentPut Fritz Aquatics Maracyn Oxy beside up to three alternatives, group by group.Work out your real water volumeDose against the water your tank holds, not the number on the box.

FishyMag reports what manufacturers say, quoted and linked. It does not diagnose illness or recommend a treatment, and it never infers that a product is safe from the absence of a warning — where no statement exists, it says so.

Formulations change. Always read the label on the bottle in your hand, and contact the manufacturer if your tank contains anything valuable or unusual.