Why you need this sponge filter - Provides reliable mechanical and biological filtration to reduce ammonia and remove debris while protecting small or delicate inhabitants. - Keeps aquarium water clear without creating strong currents or sucking in shrimp, fry, or small ornamental fish. - Air-powered and quiet, so it maintains water quality without disturbing home or office environments. Key features and specifications - Filtration: Fine sponge media performs mechanical filtration (traps waste and debris) and supports beneficial bacteria for biological filtration. - Size and compatibility: 2.7" diameter x 6.3" height. Designed for aquariums up to 30 gallons. Ideal for tanks used for ornamental fish, shrimp, or fry. - Operation: Air-powered, low-noise aeration. Delivers gentle water movement suited for breeding and delicate species. - Maintenance: Detachable design for easy cleaning. Rinse the sponge every 2–4 weeks using aquarium water only. Do not wash the sponge in tap water. - Installation tip: Squeeze the sponge while submerged to expel trapped air so the filter sinks to the bottom and begins working immediately. How it solves common problems - Prevents loss of young or small animals: The fine sponge keeps fry and shrimp safe from intake while still circulating and filtering water. - Reduces frequent water quality issues: The combination of mechanical and biological filtration lowers debris and supports bacterial colonies that process ammonia and nitrite. - Minimal disturbance: Quiet, air-driven operation avoids the strong flow and noise of some power filters, making it suitable for breeding setups and quiet rooms. Care and best practices - Check and rinse the sponge every 2–4 weeks with water from the aquarium to preserve beneficial bacteria. - Avoid cleaning with tap water or harsh detergents to prevent killing beneficial microbes. - After installing or cleaning, firmly squeeze the sponge underwater to remove trapped air so it sinks and functions properly. Practical use scenarios - Breeding tank for fry or shrimp: Provides gentle filtration that maintains water clarity while protecting fry from being pulled into intake. - Quarantine or hospital tank: Keeps water clean without producing a strong current that stresses sick or recovering fish. - Small community aquarium up to 30 gallons: Supports stable water chemistry and reduces debris in tanks with plants, small ornamentals, or delicate invertebrates. What to expect - Clearer water through combined mechanical and biological filtration. - Quiet, low-stress operation for sensitive species. - Simple routine maintenance that preserves beneficial bacteria and filter performance.