Long-lasting transparency: a multi-layer acrylic composite structure delivers maximum viewing clarity with structural stability, essential for successful aquarium breeding and fry rearing. Stable construction: double-stitched stainless steel rim prevents fraying; ergonomically shaped corners enable space-saving mounting in the aquarium. Plug-and-play: integrated water level management with continuously adjustable mounting height. Ready to use with stable anchoring technology - no mounting hardware required. Versatile application: suitable for freshwater and saltwater aquariums - creates a safe habitat for fry, isolates sick fish, and reduces aggressive behavior by spatial separation of aquarium inhabitants. Use scenarios - Fry breeding and rearing: provides a secure, separate space to protect delicate fry while maintaining access and visibility. - Quarantine: isolate sick or stressed fish to prevent disease spread and ease monitoring. - Aggression management: separate territorial fish from others to reduce fighting and improve overall tank harmony.