A 60L tank can look amazing, but it has limited biological and swimming capacity. Smart stocking prevents stress and losses.
Balanced example
- 1 centerpiece fish (if suitable)
- 8 to 12 small schooling fish of one species
- 6 corydoras or equivalent bottom group
- Optional cleanup crew only if parameters are stable
Rules to follow
Add fish in phases over several weeks, test after each addition, and keep feeding modest. If aggression appears, adjust stocking before it escalates.
For compatibility checks, ask in Freshwater Aquariums.
Checklist before making your next change
Before adjusting equipment, livestock, or water chemistry, run a short checklist. Test and log current readings, note fish behavior, and make one controlled change at a time. Recheck after 24-48 hours and only then decide whether another adjustment is needed. This method reduces random swings, avoids conflicting interventions, and gives you a clearer signal about what actually worked. It also creates a reliable record that helps when asking for support.
If you are troubleshooting quickly, include tank size, stocking, filtration setup, feeding pattern, and your latest readings in your post. Context matters more than a single number. Even experienced keepers rely on trend data and husbandry details, not one isolated test result.
Related categories and discussion areas
Continue with Freshwater Aquariums and discuss your exact setup in Freshwater Aquariums forum. For planting and layout crossover, also check Aquascaping & Plants.