Learn how to set up your first aquarium the right way. Includes equipment list, cycling guide, and first fish recommendations.
grundlagen · 6 Min. Lesezeit · beginner, setup, cycling, equipment
Setting Up Your First Aquarium
Starting your first aquarium is an exciting journey! With proper planning and patience, you can create a thriving aquatic ecosystem.
Choosing Your Tank
For beginners, we recommend starting with a 40-80 liter (10-20 gallon) tank. Larger tanks are actually easier to maintain because water parameters remain more stable.
Avoid bowls and tiny tanks — they're extremely difficult to keep stable and healthy for fish.
Essential Equipment Checklist
Filter: Choose a filter rated for 1.5-2x your tank volume
Heater: 1 watt per liter for tropical setups (25-27°C / 77-80°F)
Lighting: LED lights with adjustable brightness if keeping plants
Thermometer: Digital or glass alcohol thermometer
Test kit: API Master Test Kit (liquid tests, not strips)
Substrate: Gravel (3-5mm) or sand, 3-5cm depth
Decorations: Rocks, driftwood, live or silk plants (avoid sharp plastic)
The Nitrogen Cycle — Your Most Important Lesson
Never add fish on day one! Your tank needs beneficial bacteria to convert toxic ammonia (from fish waste) into less harmful substances.
Cycling Process (4-6 weeks):
Set up tank with filter running
Add ammonia source (fish food or pure ammonia)
Test daily: Ammonia → Nitrite → Nitrate
When ammonia and nitrite stay at 0 for 7 days, you're cycled!
Fish-in cycling is cruel and risky — always cycle fishless first.
First Stocking Suggestions
Once cycled, add fish slowly — 3-5 small fish per week maximum.
Excellent beginner fish:
Neon Tetras (school of 8-10)
Guppies (6-8 mixed)
Corydoras Catfish (6+ group)
Cherry Shrimp (10+)
Avoid:
Goldfish (need 200+ liters and cold water)
Plecos (grow huge, 300+ liters)
Oscars, Cichlids (aggressive, large tanks needed)
Maintenance Routine
Daily: Feed once (skip 1 day/week), check temperature
Weekly: 25-30% water change with gravel vacuum
Monthly: Clean filter media in old tank water (never tap!)
Test water weekly for first 3 months
Common Beginner Mistakes
Adding fish too early → Ammonia poisoning
Overfeeding → Water quality crash
Overstocking → Stress, disease, poor water
Cleaning filter in tap water → Kills beneficial bacteria
Not using dechlorinator → Chlorine kills fish
Conclusion
Patience is key! A properly cycled, lightly stocked, and well-maintained tank will thrive. Rush the process, and you'll face constant problems.
Take your time, test your water, and enjoy the journey!