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Tank Volume (gallons)

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📊 Stocking Level

Add fish above to see your stocking level

💡 Pro Tips

  • Cycle your tank first — run your filter for 4-6 weeks before adding fish to establish beneficial bacteria
  • The "1 inch per gallon" rule is a rough guide — body mass matters more (a 3" goldfish has way more bioload than a 3" neon tetra)
  • Better filtration = more capacity. A canister filter rated for 2x your tank size makes a huge difference
  • Perform 25% water changes weekly — no filter replaces regular maintenance
  • Stock gradually — add a few fish at a time over weeks, not all at once