Printable Aquarium Water Test Log
This water test log is for aquarium owners who want a simple record of tank readings over time. It gives you a clean 3-page layout with columns for Date, Temp, pH, Ammonia, Nitrite, Nitrate, Water change %, and Notes. The pages are set up in letter landscape PDF format, with space to write down each test in order.
Free printable · PDF
- 3 pages
- US Letter, landscape — choose “Fit to page” for A4
- PDF, 61 KB
Free for personal, family and classroom use.
Need to edit it? The full pack has the editable Excel and Word files plus all 4 sheets — $5.00, one-time.
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Use one row for each testing day and keep the pages near your tank supplies. The log makes it easy to compare changes after water changes, filter work, new fish, or treatment. Write the same tests each time so your records stay easy to scan and review.
Good for
- Record weekly aquarium water tests
- Track changes after water changes
- Keep notes on tank conditions
Tip: Print on white paper and store the pages in a clipboard by your tank.
4 files · XLSX, PDF, DOCX
Get every sheet: Aquarium Keeper Kit
This sheet plus 3 more in one download, with the editable Excel and Word files. Aquarium keeper kit: stocking planner workbook, water test log with target ranges, weekly and monthly maintenance schedule, fish compatibility notes and a new-tank cycling checklist.
$5.00 USD, one-time 4 files · about $1.25 each
- Instant download
- 7-day refund
- Secure checkout by Stripe
7-day money-back guarantee. Full refund within 7 days of purchase, even after you download.
More free printables
Aquarium Stocking Planner Printable1 page · free PDF
Printable Aquarium Maintenance ScheduleA one-page aquarium maintenance schedule with space to track routine care, cleaning, and water checks for a healthy tank.1 page · free PDF
Printable New Tank Cycling ChecklistOne-page checklist for new tank cycling. Track setup steps and monitor progress as you prepare an aquarium for stocking.1 page · free PDF