Claim checked: "Large water changes kill shrimp"

What is supported: a change can expose animals to differences in temperature, dissolved composition, pH, contaminants and gas state.

What is not established: percentage alone does not determine safety, and a tiny change is not automatically useful or harmless.

Do next: identify the purpose, compare source and tank water, calculate dilution and observe the result.

Detailed guide: https://moltandmoss.com/care/water-changes
Full claim check: https://moltandmoss.com/care/claims/water-change-percent