🐟 Why Tank Size Matters
Choosing the correct aquarium size is important for fish health, stability, and long-term success.
📊 Standard Aquarium Tank Size Chart
| Tank Size (Litres) | US Gallons | Best For |
|---|---|---|
| 5L – 10L | 1 – 2.5 gal | Shrimp, snails (not fish recommended) |
| 20L | 5 gal | Betta fish, small planted setups |
| 40L | 10 gal | Beginner nano community fish |
| 60L | 15 gal | Small schooling fish (tetras, guppies) |
| 100L | 26 gal | Balanced community tank |
| 200L+ | 50+ gal | Advanced aquascapes, large schools |
🐠 Stocking Guidance (Simple Rule)
A safe beginner rule: 1 cm of fish per 1 litre of water (adjust depending on species).
- Small tanks = light stocking only
- Medium tanks = community fish possible
- Large tanks = stable ecosystems
🧠 Pro Tip
Bigger tanks are actually easier to maintain because water conditions stay more stable.
🧮 Try the Tank Calculator
Not sure about your tank size? Use our calculator:
Go to Tank Calculator