Perform regular partial water changes
Avoid overfeeding
Remove uneaten food promptly
Clean filter media without destroying beneficial bacteria
Vacuum substrate during maintenance
Reduce fish stocking density
Add live aquarium plants
Use fast-growing floating plants
Improve biological filtration
Rinse decorations and surfaces during cleaning
Remove decaying plant matter and dead organisms
Feed smaller portions more often
Use nitrate-removing filter media
Maintain proper tank cycling
Increase tank maintenance frequency
Use purified water if tap water contains nitrates
Control waste buildup in the aquarium
Avoid overcleaning the filter
Monitor nitrate levels regularly