A little less guesswork.
eSHa ndx calculator
ndx — standard dose with 24-hour cleanup
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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What happens after the first ndx addition?
The standard result includes the first addition and the required 24-hour cleanup: siphoning, filter cleaning and a 50% water change, with the manufacturer’s alternative shown separately.
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.
Standard Dose + 24-Hour Cleanup
| Stage | Amount or action for 100 L |
|---|---|
| Day 1 | 100 drops (or 4.4 mL) |
| After 24 hours | No dose. Siphon the bottom, clean the filter and perform a 50% water change. Manufacturer alternative: siphon the bottom, filter over fresh activated carbon and change 20% of the water. Follow the leaflet. |
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 ndx with other eSHa products. Its drop-to-mL conversion differs from other bottles. Repeats for egg-laying nematodes depend on the applicable directions.
Product-specific checks from the calculation record
- Do not combine ndx with other eSHa products. Follow its specific filtration and cleanup instructions.
Is the cleanup row another dose?
No. It is an aftercare action. Retain it in your plan rather than counting every table row as a medicine addition.
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.