Maintaining a marine aquarium requires regular care. To help keep your tank clean and your fish healthy, here’s a comprehensive checklist broken down into weekly, monthly, and yearly tasks:

Weekly Maintenance:

• Test water parameters (pH, ammonia, nitrites, nitrates, salinity).
• Remove uneaten food and clean debris from the substrate.
• Clean the glass with an algae scraper.
• Perform a 10-20% water change.

Monthly Maintenance:

• Clean filter media and replace as necessary.
• Check for algae buildup on decorations and remove it.
• Inspect fish for any signs of disease or injury.
• Test additional parameters such as phosphate and calcium if you keep corals.

Yearly Maintenance:

• Inspect and replace worn-out equipment (heaters, lights, powerheads).
• Deep clean the substrate and décor.
• Evaluate the health of the tank inhabitants and make necessary changes.