Floating dual module design that can be mounted on the left or right side. It remains buoyant and does not sink, and its dual configuration provides a compact, spacesaving installation. Includes a black background sticker to enhance viewing of the landscape or aquascape. Exquisite workmanship with a transparent housing and a compact profile for a clean, unobtrusive appearance. Replaces traditional water replenishing devices, offering a streamlined alternative in compatible setups. Material and construction: transparent housing designed for durability and clear visibility of internal components. Built for a compact footprint to fit in tight spaces. Compatibility and performance: designed for flexible installation on either side, suitable for typical aquarium and landscape setups where a water replenishment device is used. Provides stable operation without occupying additional space. Size note: compact footprint to maximize tank or enclosure use without crowding other equipment or decor. Use scenarios: Home freshwater aquarium with decorative landscaping: mount on left or right to keep water levels stable while maintaining a clean aesthetic. Aquascape or blackbackground tanks: use the included sticker to improve contrast and highlight plants, rocks, and layout. Small or nano tanks and terrariumlike setups: the dualmodule, spacesaving design fits in tight spaces while replacing traditional devices.