Check fish, water temperature, and equipment

Feed fish and remove any uneaten food

Empty protein skimmer (saltwater tanks)

Clean glass cover or condensation tray

Add any water needed to compensate for evaporation

Remove any algae from glass

Change water (amount changed depends on stocking level)

Remove dead leaves from live plants and trim if needed

Check pH, total alkalinity, ammonia levels, nitrate and nitrite levels, specific gravity (for saltwater and brackish tanks), and filter flow (clean if needed)

Stir top of substrate and remove debris

Replace carbon in filter

Clean protein skimmer (marine saltwater tanks), filter pipework, and quartz sleeve of ultraviolet sterilizer (if applicable)

Service power filters and air pump

Check lighting

Replace ultraviolet sterilizer tubes