Quick Answer
Reef sand is usually aragonite-based and helps create a natural marine appearance. Grain size affects flow, cleaning, and burrowing animals, so it should be matched to the reef style.
Care and Setup Notes
- Choose grain size based on flow and livestock needs.
- Keep sand clean with appropriate maintenance and cleanup crew.
- Do not add deep sand beds casually without understanding their long-term behavior.
What to watch
Use this page as a planning profile, then match the advice to your exact tank size, livestock, temperature, filtration, and water test results. If livestock are already stressed, test ammonia, nitrite, nitrate, pH, and temperature before making big changes.
Image: Wikimedia Commons fish photo used as contextual marine reference