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AhaBulb: Stuff Everyone Should Know · ahabulb.com/fish-ich-repeat-treatment

Why must ich be treated more than once?

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  1. One dose misses parasites that hatch later
  2. The parasite becomes resistant after one dose
  3. Fish need several doses to absorb the medicine

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References

  1. UF/IFAS EDIS: Ichthyophthirius multifiliis (White Spot) Infections in Fish ask.ifas.ufl.edu/publication/FA006 Checked 2026-10-11.
  2. UF/IFAS EDIS: Ichthyophthirius multifiliis (White Spot) Infections in Fish ask.ifas.ufl.edu/publication/FA006 Checked 2026-10-11.
  3. Merck Veterinary Manual: Disorders and Diseases of Fish www.merckvetmanual.com/all-other-pets/fish/disorders-and-diseases-of-fish Checked 2026-10-11.

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