How Often Should I Perform Water Changes and Tank Maintenance?

Routine maintenance is essential for a thriving aquarium, and water changes are the most important part of this routine. Even the best filtration systems can’t remove everything—dissolved waste, nitrates, and organic compounds still build up over time. That’s where water changes come in.

Standard Guideline: Change 25–30% of your tank water weekly. This keeps nitrate levels in check and replenishes vital minerals.

Factors That Influence Water Change Frequency

Stocking Density: Heavily stocked tanks need more frequent changes.
Live Plants: Planted tanks may need fewer changes due to natural nitrate absorption.
Filtration: More filtration extends time between changes, but doesn't eliminate the need.

💧 Tip: Always use dechlorinated water at a similar temperature to your tank. Let it sit overnight if possible. You can use Betterscape's Maintenance logs to help keep track of maintenance shcedules and upcoming tasks!

Beyond Water Changes: Core Maintenance Tasks

Filter Cleaning: Rinse media every 2–4 weeks (never all at once).
Gravel Vacuuming: Remove detritus from substrate during water changes.
Algae Control: Scrape glass and clean decorations regularly. Adjust lighting if needed.
Equipment Checks: Inspect heaters, air pumps, and filters to ensure proper operation.
Plant Pruning: Trim overgrown stems to maintain light flow and healthy roots.

🧠 Did You Know?
Consistent small water changes are less stressful to fish than infrequent large ones.

📅 Want to stay on track?
Log your tank care and test results at Betterscape.ai and get reminders + trend insights powered by AI.