Kovi Apps
Aquarium water-change and event log
Keep a tank event distinct from the water tests around it. This sheet records the time, your description, an amount if measured, and references to your actual observations. It does not infer that an event caused a later reading.
Aquarium water-change and event log
| Date / time | Tank | Event | Measured amount / unit | Before test reference | After test reference |
|---|---|---|---|---|---|
A personal event log does not diagnose animals, establish safe conditions or recommend maintenance or treatment.
koviapps.com/guides/aquarium-water-change-log · Kovi Apps
How to use this resource
- Identify the tank and write the event time.
- Describe what actually happened, including a measured amount and its unit if relevant.
- Reference the separate dated readings taken before and after the event.
- If a test was not performed, state that instead of estimating a result.
The downloadable CSV matches the printed table. It has no formulas and is not an app-import file. Entered browser-tool data, when offered, has its own download button.
Why events need their own rows
A note entered on the same day as a measurement may still refer to a different time. Record the order explicitly: sample taken, event performed, then a later sample. This makes the timeline readable without asserting a biological or chemical explanation.
Avoid false precision
An estimated amount should be marked as estimated. Do not turn the nominal tank capacity into an assumed amount changed. This log supplies neither a recommended frequency nor a percentage or dosing formula.
A small filing example
Use stable references such as Tank-A / 2026-10-30 09:00 and Tank-A / 2026-10-30 15:00. Keep the actual results and methods in the test log. The event sheet can then remain short without losing the link to the original observations.
iPhone
Aquarium Journal
Aquarium Journal combines tank measurements and event notes, with user-initiated export options. This CSV is a separate manual worksheet.
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About this resource
Prepared by Kovi Apps with AI assistance and reviewed against our documented product scope. This is an independent resource, not an official form or professional review. References provide context and do not imply endorsement.