eSHa EXIT for bettas: volume, records and treatment limits
By Richard James · Manufacturer sources reviewed 28 October 2026
This guide helps you prepare a calculation for a small separate treatment tank. It does not prescribe a medicine for bettas or create a special species dose. A spot-like mark or rubbing is an observation to record, not a confirmed diagnosis from this website.
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Start with the aquarium you will actually treat
Record the treatment vessel separately from the usual aquarium. Moving the fish does not transfer the old aquarium’s water volume or medication history to the new vessel.
Write down the exact bottle, all products already added, the water-test results and the reason treatment is being considered. If the cause is uncertain or the fish is deteriorating, seek appropriate fish-health advice.
A water-volume example
A vessel marked 20 L was filled with 15 L of measured water. Enter 15 L as measured water; do not select 20 L and apply an invented species discount.
This is a worked input example, not a clinical case or evidence of treatment success. Check litres versus US or UK gallons before using the result.
Use the product instructions alongside the result
Read the EXIT course guide for preparation, compatibility and course limits. Open the eSHa EXIT calculator only after checking the exact bottle and application.
- Keep each displayed day or application separate.
- Measure the quantity with suitable equipment; do not guess an unmeasurably small fraction.
- Record what was actually added and when.
- Check the manufacturer instructions before changing water, combining products or repeating a course.
What this guide does not decide
There is no automatic half-dose, double-dose, heat treatment, salt addition or recovery deadline based on the species name. The linked manufacturer instructions take priority over a general species shortcut. If your bottle differs from the calculator, resolve that difference before dosing.
Sources and review scope
eSHa EXIT manufacturer instructions. Reviewed 28 October 2026. Published manufacturer directions and editorial claims; not an independent clinical or efficacy assessment.