eSHa EXIT for Sensitive Fish: Check the Actual Instructions

By Richard James · Updated 27 October 2026

Manufacturer guidance reviewed: 27 October 2026.

“Sensitive” is not one species or one dosing rule. Check the fish’s identity, condition, water and other treatments before deciding that a medicine is appropriate. Rubbing or rapid breathing alone does not prove white spot.

Jump to a section
  1. What eSHa says
  2. Rules removed from the previous article
  3. Prepare information that helps assess the case
  4. Use the normal course only where applicable
  5. Sources and related guidance

What eSHa says

eSHa describes EXIT for freshwater ornamental fish and states that it can be used with scaleless and sensitive fish when appropriately dosed. That product guidance does not establish a guarantee for every individual or every mixture.

Rules removed from the previous article

  • The automatic five-day course for sensitive species.
  • The half-dose for fry over twice the duration.
  • The mandatory 30-minute staggered addition for rays and knifefish.
  • A universal 28°C maximum while medicating.
  • The fixed 20% water-change response to every adverse sign.

Those instructions were not substantiated from the cited manufacturer guidance. Use the exact leaflet or obtain product-specific advice instead of applying a universal adjustment based on a broad fish category.

Prepare information that helps assess the case

Record the species, approximate size, symptoms, test results, temperature, actual water volume and all products already used. Note whether symptoms preceded dosing or changed afterwards. Do not assume that an adverse response is either harmless “adjustment” or definitive proof of one particular cause.

Continue observing breathing and behaviour during treatment. A worsening fish needs reassessment of the water, equipment, quantity added and treatment choice; an unsupported rescue percentage or extra dose is not a substitute for that assessment.

Use the normal course only where applicable

The EXIT dosing guide explains the current standard course and the limits of extension advice. A calculator scales a chosen course; it does not decide whether a fish needs treatment or an altered regimen.

Sources and related guidance

Written by Richard James

Aquarist and author specializing in disease prevention and treatment. Keeping your aquarium healthy one drop at a time.

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