Write observable details
Record how many shrimp appear affected, what they are doing, and whether they remain upright. Avoid labels such as “poisoned” unless a source confirms the cause.
Note the date and the time of your check. A short video can document movement without repeatedly handling the animals.
Add environmental context
List recent water changes, filter cleaning, new plants, medications, and temperature shifts. Include test results with units and method.
Do not assume a new product is responsible simply because it was added recently. Context helps guide a proper investigation.
Choose a careful next step
Check filter operation and water quality first. If the concern persists or deaths occur, seek experienced or veterinary guidance.
Avoid stacking medication, buffers, and large water changes without a clear reason. A calm record helps prevent guesswork.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.