When sourcing high-end aquariums, the choice between Ultra-White (Low-Iron) Glass and Acrylic is critical. Ultra-white glass offers 91.5% light transmittance, providing superior clarity and scratch resistance, making it ideal for professional aquascaping. Acrylic is lighter and more impact-resistant, suitable for extra-large custom tanks, but it scratches easily. Ensure the glass thickness meets safety standards (e.g., 10mm-19mm) based on the tank's height to prevent structural failure under water pressure.