Formulation evidence record
Fritz Aquatics Maracyn Oxy
Non-antibiotic oxidising treatment · US formulation
Shrimp
Amano, cherry, crystal and other freshwater shrimp.
Snails
Nerite, mystery, ramshorn and other aquarium snails.
Live plants
Rooted and floating live aquarium plants.
Scaleless fish
Loaches, corydoras, plecos, eels and other scaleless species.
Marine invertebrates
Corals, anemones, starfish and marine crustaceans.
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 compatibleMarked 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 compatibleNamed directly in the compatibility table as compatible.
“Snails and other invertebrates Yes”
manufacturer page · fritzaquatics.com · checked August 16, 2026
Live plants
CautionCleared 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 compatibleScaleless 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
CautionCoral 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
Check the evidence boundary
What this record can—and cannot—answer
US formulation · label revision: not recorded · version: not recorded.
Match the label and concentration on your bottle before using a dose ratio.
Biological filter
Missing evidence is not a compatibility finding.
No specific interaction warning is recorded here. This is not a complete interaction review or permission to combine treatments.
Formulation record checked August 16, 2026. Source dates can differ within the record. A dated check is not a guarantee that the label has stayed unchanged.
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.
The biological filter is included in every non-empty tank check, alongside your selected groups.
Non-antibiotic oxidising treatment · US formulation
Qualifications or unresolved cautions.
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.
- Biological filterNo evidence found
No statement from the manufacturer was found for this group. Treat it as unconfirmed and check with the manufacturer before dosing.
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.
Other treatments
Next steps
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.