Feature:1. Universal for freshwater and seawater, clever use of differential pressure principle, easy to place and replenish water, especially suitable for small fish tanks.2. Slot type fixing, center force structure, stable center of gravity and safety of fish tank wall.3. Noise reduction structure, considerate and humanized designs.4. Important accessories for fish tank, easy to install and use.5. Made of quality material, safe and ecofriendly, stable and durable.Specification:Condition: 100% Brand NewItem Type: Fish Tank Water FillerMaterial: ABS+MVQPurpose: Replenish water for freshwater and seawater fish tanksFish Tank Wall Insert Board Specifications: 1 x 3-4mm fish tank wall insert board, 1 x 5-6mm fish tank wall insert board, 1 x 8mm fish tank wall insert board.Package List:1 x Water Filler1 x Double-Sided Adhesive Tape1 x Water Hose1 x Chinese & English Manual3 x Fish Tank Wall Insert Board