Ingredient risk record
Kanamycin
Also appears as: kanamycin sulfate
An aminoglycoside antibiotic used against bacterial infections. Seachem instructs keepers to remove all invertebrates before dosing its kanamycin product, describing them as extremely sensitive to medication — a broader caution than the copper-specific warnings elsewhere in the hobby.
Source-linked caution for
The evidence is formulation associated. It raises a warning on a product containing this ingredient but never decides the verdict.
“Remove all invertebrates - these are extremely sensitive to medication.”
manufacturer page · seachem.com · checked August 16, 2026
The inference only runs one way
A product containing kanamycin gets a warning. But a product without it gets nothing — no clearance, no green tick. Fritz Algae Clean Out contains no copper and is still explicitly unsafe for shrimp and snails, which is why FishyMag will not certify a product as compatible unless the manufacturer says so directly.
Treatments containing kanamycin
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.