The bottle matters
Market and formulation stay explicit because familiar product names can change over time.
Manufacturer wording, linked
Treat the problem.
Protect the tank.
Check a specific aquarium-treatment formulation against the shrimp, snails, plants and other life already in your tank. Every factual verdict shows its source; undocumented cases stay visibly unknown.
- 8
- formulations
- 41
- verdicts
- 3
- manufacturers
Positive claims require evidence.No statement means unknown—not safe.
Interactive evidence check
What lives in your tank?
Choose a formulation and the livestock you need to protect. The most restrictive manufacturer position leads.
External parasite and fungal treatment · US formulation
Permitted, but with conditions.
The manufacturer stops short of clearing this for something in your tank. Read the detail below before you dose.
- ShrimpCaution
Seachem explicitly declines to certify this as invertebrate safe, and says so in unusually candid terms. They suggest keepers who proceed start at a quarter to half dose and watch for reactions — which is guidance for accepting a risk, not a safety clearance.
- SnailsCaution
Covered by the same statement as shrimp — Seachem does not market ParaGuard as invertebrate safe, and does not single snails out as an exception.
- Live plantsCaution
Seachem describes it as generally safe in planted aquaria, but frames this as their experience rather than a tested guarantee. That is weaker than a label claim, so it is recorded as caution rather than compatible.
See the manufacturer’s exact wording and sources for Seachem ParaGuard →
No evidence found means no manufacturer statement was found — not that the product is safe. FishyMag does not diagnose disease or recommend treatments.
Observation desk · illustrativeHow the ledger works
Evidence before confidence.
Unknown stays unknown
A missing warning never becomes a green light. Silence remains visibly unconfirmed.
Read the words yourself
Every verdict exposes its source type, checked date and original wording where available.
Why “it contains no copper” isn’t an answer
One product proves why this dataset cannot be generated from ingredient lists.
Ingredient context · illustrativeCopper is the best-known invertebrate killer in the hobby, so the obvious shortcut is to check the ingredients and clear anything copper-free. That shortcut is wrong.
Fritz Algae Clean Out contains no copper. Fritz still says: “Not safe for use with freshwater invertebrates including snails, shrimp, clams, other crustaceans or molluscs.” An ingredient-based checker would have given that product a green tick and cost you your shrimp colony.
So FishyMag treats ingredients as a way to raise a warning, never to issue a clearance. A positive verdict requires the manufacturer to have said so.
Treatments
8 formulations from 3 manufacturers, 27 of 41 verdicts backed by a first-party source.
Seachem ParaGuard
External parasite and fungal treatment
- Shrimp
- Caution
- Snails
- Caution
Fritz Aquatics Algae Clean Out
Algae treatment
- Shrimp
- Do not use
- Snails
- Do not use
Fritz Aquatics Mardel Coppersafe
External parasite treatment (chelated copper)
- Shrimp
- Do not use
- Snails
- Do not use
Seachem Cupramine
External parasite treatment (copper-amine)
- Shrimp
- Do not use
- Snails
- Do not use
API Liquid Super Ick Cure
Ich treatment
- Shrimp
- Do not use
- Snails
- Conflicting
Seachem MetroPlex
Protozoan parasite and anaerobic bacterial treatment
- Shrimp
- Do not use
- Snails
- Do not use
Seachem PolyGuard
Broad-spectrum bacterial, fungal and parasitic treatment
- Shrimp
- Do not use
- Snails
- Do not use
Fritz Aquatics PraziCleanse
Anthelmintic (deworming) treatment
- Shrimp
- Caution
- Snails
- Caution
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.
Dataset last checked August 16, 2026.