How to Set Up a Reef Tank: A Beginner's Guide for Australia
By Melbourne Tropical Team Β· 2 min read
Thinking of starting a saltwater reef tank? This plain-English guide walks you through the gear, the cycle and the first steps to a thriving reef in Australia.
Is a reef tank right for you?
A reef tank is more involved and more expensive than freshwater, but it is absolutely achievable for a careful beginner. The secret is patience and stability - reefs reward people who go slow. Start with a tank of at least 75-120 litres; bigger water volumes are far more stable, which makes everything easier.
The essential equipment
A reef needs a few extra pieces of kit beyond a freshwater tank:
- Tank & stand rated for the weight (saltwater plus rock is heavy).
- Live rock - the biological heart and filter of the reef (about 0.5 kg per litre as a guide).
- Protein skimmer - removes waste before it breaks down.
- Powerheads / wavemaker for strong, varied flow.
- Reef LED lighting suited to the corals you want.
- Heater and an accurate thermometer.
- RO/RODI water, quality reef salt, a refractometer and test kits.
Cycling a marine tank
Mix saltwater to 1.024-1.026 specific gravity, add your live rock and sand, and let the tank cycle just like a freshwater tank - ammonia rises, then nitrite, then nitrate, and the tank is ready when ammonia and nitrite read zero. This usually takes 3-6 weeks. Track it with our cycling tracker and learn the testing routine in our API test kit guide.
Adding livestock in the right order
Patience pays off. A sensible order is: 1) a clean-up crew once algae appears, 2) one or two hardy fish like clownfish or a damsel, 3) easy soft corals, then 4) LPS and finally SPS corals once the tank is mature and stable. Browse our marine fish and coral guides to plan a compatible, reef-safe stock list.
The golden rules
Go slow, test regularly, keep salinity and temperature rock-steady, and don't chase 'perfect' numbers - stability beats perfection every time. Top up evaporation with fresh RO water, not saltwater, and do regular small water changes with a quality salt mix.