Formulation evidence record

Fritz Aquatics Mardel Coppersafe

External parasite treatment (chelated copper) · US formulation

Shrimp

Amano, cherry, crystal and other freshwater shrimp.

Do not use

Snails

Nerite, mystery, ramshorn and other aquarium snails.

Do not use

Live plants

Rooted and floating live aquarium plants.

Caution

Marine invertebrates

Corals, anemones, starfish and marine crustaceans.

Do not use

Not addressed by the manufacturer for: scaleless fish, 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 advises against

Named directly in the warning. Note also that this is a chelated formulation designed to stay active for up to a month, so the tank does not become invertebrate-safe again when dosing stops.

Contains copper, with a source-linked caution associated with this group. This raises a flag—it is not the basis of the verdict above.

“Not safe for use with invertebrates: corals, snails, shrimp, clams, jellyfish, other crustaceans or molluscs; these types of livestock should be removed before dosing.”

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

Snails

Manufacturer advises against

Named directly in the same warning. Remove before dosing.

Contains copper, with a source-linked caution associated with this group. This raises a flag—it is not the basis of the verdict above.

“Not safe for use with invertebrates: corals, snails, shrimp, clams, jellyfish, other crustaceans or molluscs; these types of livestock should be removed before dosing.”

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

Live plants

Caution

Fritz flags possible harm to plants and amphibians rather than ruling it out entirely, so a planted tank is a judgement call rather than a clear yes or no.

“Coppersafe® may be harmful to plants and amphibians.”

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

Marine invertebrates

Manufacturer advises against

Corals and jellyfish are named explicitly alongside crustaceans and molluscs.

Contains copper, with a source-linked caution associated with this group. This raises a flag—it is not the basis of the verdict above.

“Not safe for use with invertebrates: corals, snails, shrimp, clams, jellyfish, other crustaceans or molluscs; these types of livestock should be removed before dosing.”

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

Product details

Manufacturer states it treats: Ich, Velvet, External parasites
Chemical filtration: Not stated by the manufacturer
Ingredients as stated: Chelated copper solution. Therapeutic range 1.5–2.0 ppm, remaining active in the aquarium for up to a month.
Active ingredients: Copper

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

External parasite treatment (chelated copper) · US formulation

2 Select everything in the tank

The manufacturer advises against using this with your tank.

At least one thing you listed is named in a warning. Move that livestock to another tank, or choose a different treatment.

ShrimpManufacturer advises against
Named directly in the warning. Note also that this is a chelated formulation designed to stay active for up to a month, so the tank does not become invertebrate-safe again when dosing stops.
SnailsManufacturer advises against
Named directly in the same warning. Remove before dosing.
Live plantsCaution
Fritz flags possible harm to plants and amphibians rather than ruling it out entirely, so a planted tank is a judgement call rather than a clear yes or no.

See the manufacturer’s exact wording and sources for Fritz Aquatics Mardel Coppersafe →

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

Seachem ParaGuard Fritz Aquatics Algae Clean Out Seachem Cupramine API Liquid Super Ick Cure Seachem MetroPlex Seachem PolyGuard Fritz Aquatics PraziCleanse

Next steps

Check against my tankSee how Fritz Aquatics Mardel Coppersafe and every other treatment compare against what you actually keep.Compare with another treatmentPut Fritz Aquatics Mardel Coppersafe 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.