Aquarium Maintenance Checklist

A routine aquarium upkeep checklist split into daily, weekly and monthly tasks for fishkeepers.

Published July 10, 2026

Daily Tasks

Check water temperature and heater function
Observe each fish for normal behavior and appetite
Feed an appropriate amount and remove uneaten food
Confirm filter and pump are running normally
Check the water level and top up evaporation if needed

Weekly Tasks

Test ammonia, nitrite, nitrate and pH
Perform a partial water change
Use dechlorinated, temperature-matched water
Vacuum the substrate to remove waste
Wipe algae from the glass
Record test results to track trends

Filter & Equipment Care

Check filter flow and clean intake if reduced
Rinse mechanical media in old tank water
Inspect heater, lights and air pump for faults
Replace mechanical media as needed, staggering changes
Never replace all media at once or you lose beneficial bacteria

Monthly Deep Clean

Do a larger water change if test results call for it
Clean the glass canopy, lid and light fixture
Trim live plants and remove dead leaves
Clean exterior glass and the stand
Check tubing, seals and connections for leaks

Supplies to Keep on Hand

Water test kit and dechlorinator
Gravel vacuum and clean buckets
Algae scraper or magnet
Spare filter media and a backup heater
Fish-safe cleaning cloths and a thermometer

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An aquarium maintenance checklist is a routine of daily, weekly and monthly tasks that keep tank water stable and fish healthy — water changes, water testing, filter care and glass cleaning. It helps owners stay consistent so problems are caught before they harm livestock.

Stable water is the foundation of fishkeeping. Small, regular maintenance prevents the swings in ammonia, nitrite and nitrate that stress or kill fish, and it keeps algae and waste under control between deep cleans.

This printable list suits beginners and experienced aquarists with freshwater or planted tanks, with the same principles adapting to most setups. Follow the daily, weekly and monthly groupings to build a reliable rhythm.

Print it or download the PDF and tick off each task as you complete it.

FAQ

How often should I do a water change?

A common routine is a partial water change of around 10–25% weekly, adjusted for stocking and test results. Always treat tap water with dechlorinator and match temperature before adding it.

What water parameters should I test for?

Regularly test ammonia, nitrite, nitrate and pH, plus temperature. Keep ammonia and nitrite at zero in an established tank and watch nitrate trends to judge how often water changes are needed.

Should I clean my filter when I do a water change?

Rinse filter media in old tank water, not tap water, to protect the beneficial bacteria, and only when flow drops. Spreading filter and water-change maintenance avoids disturbing the biological balance all at once.

How do I keep my fish healthy day to day?

Feed appropriate amounts, observe behavior and appetite daily, keep parameters stable and quarantine new fish. For illness or persistent problems, consult an aquatic veterinarian or fish specialist.

Can I print this aquarium maintenance checklist?

Yes. Print it or download the PDF so you can keep it near the tank and tick off daily, weekly and monthly tasks.