Essential information for maintaining a healthy aquarium
Choose an appropriately sized tank (larger is better for stability). Set up filtration, heating, and lighting systems. Cycle the tank for 4-6 weeks before adding fish to establish beneficial bacteria. Test water parameters regularly. Add decorations and plants for enrichment and hiding spots.
Maintain proper water parameters: temperature, pH, ammonia, nitrite, and nitrate levels. Perform weekly 25% water changes using dechlorinated water. Test water weekly and after any changes. Never change all water at once. Match temperature when adding new water to avoid shocking fish.
Feed fish small amounts 1-2 times daily, only what they can consume in 2-3 minutes. Overfeeding causes water quality issues. Vary diet with flakes, pellets, frozen, and live foods appropriate for species. Fast fish one day per week. Remove uneaten food promptly.
Quarantine new fish for 2-4 weeks before adding to main tank. Maintain excellent water quality to prevent most diseases. Watch for signs of illness: unusual swimming, loss of appetite, spots, or color changes. Act quickly if disease appears. Keep stress low through proper tank mates and environment.
Clean filter media monthly in tank water (never tap water). Replace filter cartridges as needed but maintain biological filtration. Clean glass weekly to remove algae. Check equipment regularly for proper function. Replace heater and air pump components as they age.
Research fish compatibility before mixing species. Consider adult size, temperament, water parameter needs, and swimming levels. Avoid overcrowding (1 inch of fish per gallon is a rough guide). Some fish are territorial or aggressive. Provide adequate space and hiding spots for all inhabitants.