Aquarium Maintenance Log & Water Parameter Record – Water Tests, Water Changes and Filters | Word/PDF/Excel

Aquarium Maintenance Log & Water Parameter Record is a complete package of editable document templates and a formula-driven Excel record for private aquarium owners. Collect measured water parameters, document water changes, filter and equipment maintenance, and track fish observations, planned actions, and actual costs—without mixing up planned work with actually performed checks.

Important limitation: This is a documentation tool, not an aquarium chemistry advisor, veterinary diagnosis, or method for automatically determining whether water is suitable for a particular fish species. Species and aquarium systems have different water requirements; no general threshold values or chemical doses are provided.

What Is Included in the Document Package?

Excel Record with Nine Tabs

The workbook contains Overview, Aquariums, Water Samples, Water Changes, Filter Service, Fish Observations, Actions, Costs, and Read Me. The tabs have 200 rows for your own entries, and a shared Aquarium ID makes it possible to manage multiple aquariums.

The overview summarizes, among other things, the number of registered aquariums, measured versus planned water samples, performed versus planned water changes, actually changed water in liters, performed and planned filter checks, documented fish observations, open deviations, and actually paid costs. Quotes or estimates are not counted as paid. Planned water changes are not counted as performed.

Excel does not have automatic measurement import, alarms, laboratory analysis, species-dependent safety limits, chemical doses, disease diagnostics, or reminders. The customer version opens without dummy example entries.

How the Documentation Works

1. Create an aquarium profile with a unique Aquarium ID, estimated or measured volume, and the fish species in the tank.
2. Record water samples with date, test method, units, and actually measured values. Use the same method for comparisons when possible.
3. Enter performed water changes and the actual volume in liters. Mark planned changes separately.
4. Document filter and equipment checks only when they have actually been performed.
5. Describe unusual fish behavior without diagnosing it yourself. Contact an aquarium expert or a veterinarian with fish expertise when necessary.
6. Reconcile costs against receipts and save original documents.

What Applies to Aquarium Fish in Sweden?

The Swedish Board of Agriculture's guidance on aquatic companion animals describes rules for the environment, feed, and care of aquarium fish. According to the species-specific requirements, water, temperature, and décor must be adapted to the fish. SVA's guidance on disease control describes, among other things, why water quality, feeding, and observations are important.

The documents are not a guarantee of good animal husbandry, water safety, or fish health. Water parameters must always be interpreted in context by someone with knowledge of the species and systems in the aquarium.

Frequently Asked Questions

Can I record pH, nitrite, and nitrate?

Yes. In Excel, pH, nitrite, and nitrate are recorded, along with temperature and test method. Always state which units and which test kit were used.

Will I get an automatic warning if the water parameters are bad?

No. Different fish species and environments have different requirements, so Excel does not set any general safe or unsafe limits.

Does it calculate how much water I have changed?

Yes. Record the measured liters for each change and mark it as Performed. The overview then summarizes the liters for actually performed water changes, not planned ones.

Can I use the same Excel for multiple aquariums?

Yes, by giving each aquarium a separate Aquarium ID and using it on the other tabs.

Does the template recommend medications or chemical doses?

No. It does not offer treatment, diagnosis, dosing, or species-specific water requirements.

Are the PDF files digitally fillable?

They are searchable and print-friendly but have no interactive form fields. Use Word for editing.

Are all documents translated into English?

No. The five work templates and Excel are in Swedish; a separate English user guide is included.

More Document Templates

See Templates for Private Individuals, all document categories, and our information portal for additional support and templates.

Version 1.0 · October 25, 2026. AI-assisted production using official sources from the Swedish Board of Agriculture and SVA. No external veterinary review has been documented. The Shopify Digital Products file must be linked before the product is published.