The Sims 4 Aquarium Guide: Cheats, Tips & Best Practices

There are no aquarium-specific cheats in The Sims 4, but general build/buy and money cheats make managing tanks trivial.

Essential General Cheats (Press Ctrl+Shift+C)

Aquarium Management Tips (Vanilla Gameplay)

• Tank Size Matters: Larger tanks = more fish capacity + slower water quality decay.
• Compatibility: Check fish tooltips: "Aggressive," "Territorial," "Schooling." Don't mix aggressives with small schooling fish.
• Filtration & Heater: Always add a Filter (cleanliness) and Heater (tropical fish). Upgrade to "High Quality" versions.
• Feeding: "Feed" interaction once daily. Overfeeding → dirty tank → sick fish.
• Clean Tank: Interaction appears when dirty. Do it weekly or hire a Maid/Butler.
• Aqua-Tonic (Reward Store, 500 Satisfaction): Instantly maxes fish health/happiness. Worth it for rare fish.
• Breeding: Compatible pair + high relationship + "Encourage to Mate" → Fry appear in inventory. Move to new tank.

Creative Building with bb.moveobjects

• Embed tanks into walls (window effect).
• Stack small bowls vertically for a "wall of fish."
• Place coral/plants inside the tank bounds for dense scapes.
• Use 9/0 keys to raise/lower objects precisely.

Realism Note

The game simplifies aquarium keeping (no nitrogen cycle, pH, quarantine). For real-life fishkeeping, research cycling, water parameters, and species needs before buying live animals.