Review what changed
Eggs can be lost around molting, after stress, or when a female is disturbed. A dropped egg may not be viable in the aquarium without the parent's care.
Check whether the female recently arrived, was netted, or experienced a water change or temperature swing. Avoid assuming that mineral deficiency is the cause without evidence.
Support the next attempt
Keep the tank stable, provide cover, and maintain a suitable feeding routine. If several females repeatedly lose eggs, review water tests and handling practices.
Do not add calcium or medication blindly. Ask the breeder or an experienced shrimp keeper to review the setup before making a chemistry change.
For your own tank
If egg loss happens repeatedly, note handling, shipment timing, water changes, and molts around each event. Compare the pattern before changing minerals. One female losing eggs is not enough evidence to diagnose a colony-wide deficiency.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.