A little less guesswork.
eSHa Optima calculator
eSHa OPTIMA — choose one alternative frequency
Read the product guide and worked examples ↓
Clear amounts. Visible assumptions.
Your calculation, explained
Choose a product and enter the water you’re actually dosing.
- Check the exact product and formulation.
- Use measured water, or make an explicit estimate.
- Review the amount, source and any schedule.
Product guide · edited 28 October 2026
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Daily plan or weekly alternative?
Choose one plan: the manufacturer-recommended daily reference is 4 drops per 100 L; the weekly alternative is 20 per 100 L. They are separate routines.
Worked examples
These illustrations use 100 L of measured water, without a decor deduction. Choose the matching stage or formulation above for your own water volume. They do not select a treatment or establish livestock suitability.
Daily plan — manufacturer recommended
| Stage | Amount or action for 100 L |
|---|---|
| Daily | 4 drops (or 0.2 mL) |
Weekly alternative plan
| Stage | Amount or action for 100 L |
|---|---|
| Weekly | 20 drops (or 1 mL) |
Drops are rounded under this product’s measurement policy; mL uses the unrounded source amount. Choose one measuring method—do not add both. A drop size from another bottle is not interchangeable.
Example only. Your calculation above uses your own inputs. Small amounts and powder fractions still need equipment that can measure them reliably.
Before you measure
Do not combine daily and weekly results. Special initial or recovery uses are not selected automatically. Measure with the exact product’s dropper or its stated mL equivalent.
Product-specific checks from the calculation record
- Choose ONE frequency. Do not add the daily and weekly plans together. Special initial or recovery regimens are not selected automatically.
Why is the weekly amount not seven daily amounts?
The manufacturer publishes distinct plans. Multiplication does not replace those instructions or create a third routine.
Sources and next steps
eSHa manufacturer directions →
Manufacturer page consulted 28 October 2026. Match the exact bottle and leaflet; editorial review does not establish diagnosis or compatibility.