Setting up your first aquarium is exciting. Follow these steps and you’ll have a healthy foundation for your fish.
Step 1: Choose and place your tank
Pick a tank of at least 10 gallons for beginners — bigger is more stable. Place it on a sturdy, level surface that can hold the weight (water is heavy: ~10 lbs per gallon), away from direct sunlight and air vents.
Step 2: Add substrate and decor
Rinse the substrate thoroughly until the water runs clear, then add a 1-2 inch layer. Arrange rocks, driftwood, and plants before adding water — it’s much easier to aquascape a dry tank.
Step 3: Install the equipment
Set up your filter, heater (for tropical fish), and light following the manufacturer’s instructions. Don’t turn them on yet — wait until the tank is full of water.
Step 4: Fill and cycle the tank
Fill the tank with dechlorinated water, turn on the equipment, and let it run. The most important step: cycle the tank for 2-6 weeks to build up beneficial bacteria before adding any fish.