How to use (from the label): Standard 3-day treatment: day 1 25 drops per 100 L, days 2 and 3 12 drops per 100 L (20 drops = 1 ml); double dose in soft water below 4 dGH; no feeding on day 1.
Careful: Remove activated carbon, UV, oxidisers and resins during treatment. May kill snails and algae; take out dead snails so shrimp, crayfish and fish do not eat them. Freshwater only. Stains if spilt; keep off cuts and eyes.
Rules: Label: for ornamental fish only; do not use with animals intended for consumption.
Never mix medicines unless the label says it is safe, and remove shrimp and snails unless the label says they are safe.
Examples you may see in shops: eSHa 2000. Not endorsements. Always follow the label.
6 facts checked with sources